| ■Tokyo National Research
Institute for Cultural Properties |
■Center for Conservation
Science |
| ■Department of Art Research,
Archives and Information Systems |
■Japan Center for
International Cooperation in Conservation |
| ■Department of Intangible
Cultural Heritage |
|
Investigation of flood damage in Barbar temple
Symposium on Al Faw Archaeological Area
The Japan Center for International Cooperation in Conservation sent a research team to Bahrain and Saudi Arabia to take part in investigation and discussion of the preservation of cultural heritage in early October.
A tripartite memorandum of agreement had been signed among the Bahrain Authority for Culture and Antiquities, the Tokyo National Research Institute for Cultural Properties, and the Institute for the Study of Ancient Civilizations and Cultural Resources at Kanazawa University. Together they launched a research center to promote archaeological studies in Bahrain and cultural heritage preservation projects in collaboration. The purpose of this visit was to investigate the current preservation conditions of cultural heritage that had been damaged by heavy rain in the beginning of this year. In Qalat al Bahrain, collapse of the outer walls of the fort by water damage and serious bending of the ceiling beams made from palm trees were recognized, and the site was temporarily closed to the public. Additionally, soil erosion was recognized in a well thought to be the most sacred part of the Barbar temple, and several stones were inclined or moved by the water flow. Effects on the cultural heritage due to increasing annual precipitation is becoming more serious year by year across the Middle East. We proposed to periodically monitor the progression of deterioration in comparison with the past situation, and discussed immediate countermeasures to reduce flood damage.
We attended a symposium held in Riyadh that focused on the Al Faw Archaeological Area in Saudi Arabia, which had just been newly inscribed on the UNESCO World Heritage List in September 2024, and then visited the archaeological site. Excavation has been completed only by a few percentages, as the Al Faw Archaeological site is large and complex, mainly composed of a pre-Islamic caravan city, and also includes an area of ritual practice and numerous mound tombs from the Bronze Age. We also had a meeting with the Heritage Committee of the government of Saudi Arabia, and agreed to continue discussions on a partnership to promote site management and research for a future public opening of the Al-Faw Archaeological Area.
Training in Photogrammetry
Peace Park Tour VR in the Hiroshima Peace Memorial Park
Experiencing AR content at the Ichijodani Asakura Family Site Museum
The Japan Center for International Cooperation in Conservation held a workshop and study tour, titled, “Workshop on 3D Digital Documentation of the Cultural Heritage and Its Application” and “Study Tour on the Utilization of AR, VR, and Digital Contents in Japanese Museums and Archaeological Sites,” in Japan on October 21-30, 2024 as a part of the Activities for Exchanges in International Cooperation for Conservation of Cultural Heritage sponsored by the Agency of Cultural affairs. This is an advanced program following a basic technical workshop held in Bahrain in December 2023. Seven researchers who were invited from five different counties, Bahrain, Kuwait, Saudi Arabia, Oman, and Egypt, attended an advanced technical lecture and hands-on program, and received on-site training in flying unmanned aerial vehicles (UAVs) for wide-area surveys of archaeological sites and historical buildings. Furthermore, a study tour to find examples of usage of 3D digital documentation in Japan was conducted.
The aim of holding this invitational program in Japan is to provide opportunities to learn about various usage and applications in the areas of historical education, museum exhibitions, and open-site museums in addition to implementing 3D digital documentation in the fields of archaeology or historical buildings. The following examples were introduced: digital content, such as a digital chronicle of the Japanese fine arts produced by the Tokyo National Museum and National Center for the Promotion of Cultural Properties; a 3DDB Model Viewer, which is a twin digital project sponsored by the National Institute of Advanced Industrial Science and Technology; and the “Museum of the Street,” which is a unique program to provide touchable exhibitions reproduced from 3D digital data of real museum objects. Moreover, we visited and experienced the “Peace Park Tour VR” at Hiroshima Peace Memorial Park; Otsuka Ohmi Ceramic Co., Ltd., a factory producing replicas of cultural properties; and augmented reality (AR) and virtual reality (VR) contents merged with an on-site exhibition of archaeological remains and reconstructed streetscape in the Ichijodani Asakura Family Site Museum.
Since it was seen that each country has different main objectives to implement 3D digital documentation, more practical cooperation programs to respond to each need will be considered in the future.
Implementation of pack method using inorganic restorative materials
Before and after conservation and restoration
The Tokyo National Research Institute for Cultural Properties has been conducting research titled “International Research on Technology for the Conservation and Restoration of Cultural Heritage” since the fiscal year 2021. Last year, a research survey was conducted on the trowel paintings at the earthen storehouse of the former Kina-Saffron-Shu-Honpo in Nagaoka City, Niigata Prefecture. The research focused on removing contaminants such as dust, as well as identifying appropriate conservation and restoration methods for damaged areas, such as peeling and flaking, with the aim of establishing effective techniques. This research was commissioned by the government of Nagaoka City. Building on this, from 26 September to 16 October of this year, a follow-up study was conducted with the cooperation of European experts. The goal was to develop methods for reinforcing and restoring the colored layers and plaster layers, as well as techniques for retouching the decoration.
In the past, synthetic resin-based materials were used for the repair of damaged areas of these trowel paintings. However, due to the high temperature and humidity in summer and heavy snowfall during the winter, the materials had deteriorated significantly over time. At times, the restoration materials themselves contributed to the deterioration of the trowel paintings. To improve this situation, we considered introducing durable inorganic restoration materials. For the retouching, we adopted a coloring method that not only preserves the dignity of the mural, which will soon be 100 years old, but also harmonizes with the overall appearance of the entire trowel painting storage.
The conservation and restoration methods for the trowel paintings established through this series of research surveys mark the first such case in Japan from the perspective of cultural heritage preservation studies. While it will be necessary to evaluate the effectiveness of the results based on future monitoring, it can be said that a significant step forward has been made toward improving the current condition.
said that a significant step forward has been made toward improving the current condition.
Stucco decoration on the ruins
Survey scene at the archaeological site
Since 2021, The Japan Center for International Cooperation in Conservation has been involved in a research survey on stucco decoration and clay statues under the research project “Technology for the Conservation and Restoration of Cultural Heritage” program.
As part of these activities, we visited the Roman ruins of Somma Vesuviana in Italy on September 6 and 7, 2024. This site, located on the north side of Mount Vesuvius, has been investigated since 2002 by an excavation team led by the University of Tokyo, which has so far discovered remains of buildings thought to have been founded around AD. As a result of various investigations, there is a strong possibility that these buildings were a villa of Augustus, the first emperor of the Roman Empire, as described in historical records.
During this visit, we focused on the stucco decorations that remain among the ruins, conducted preliminary research on the materials, techniques, and coloring used, and prepared a research plan. In this plan, we also mentioned the possibility of deepening our study on modern methods of conservation and restoration of the decorative gateway, where stucco decorations and wall paintings remain, with a view to preserving and utilizing the remains.
We will continue to deepen our understanding of the structure and characteristics of stucco decoration through comparative research on stucco decoration techniques and materials for archaeological sites of the Greek and Roman periods, and continue our research on their conservation and restoration methods and site management.
Visiting Nagoya Castle
Observing paper samples during a lecture on paper basics
The International Course on Conservation of Japanese Paper (JPC) 2024 took place from August 26 to September 13, 2024, co-organized by ICCROM and the Tokyo National Research Institute for Cultural Properties (TOBUNKEN), continuing a tradition we have upheld since 1992. Through this three-week course, participants engaged in a comprehensive study on the methods that have been used to preserve paper cultural properties in Japan. The primary goal of the JPC course is to encourage participants to incorporate Japanese conservation techniques into their conservation efforts worldwide, while understanding the techniques in Japanese contexts. This year, we invited ten specialists from Armenia, Canada, Germany, Italy, Malta, Mexico, The Netherlands, Switzerland, the UK, and the US, selected from 165 applicants across 60 countries.
This JPC course consisted of lectures, practical workshops, and a study tour. During the lectures, the participants explored the protection systems for cultural properties in Japan, the characteristics of Japanese paper, and the traditional tools and materials used in conservation, such as wheat starch paste and Japanese brushes.
For the practical sessions, technical masters from a group, whose techniques called “Restoration Techniques for Mounts” were officially selected as the Selected Conservation Techniques (National), join as lecturers. The participants gained hands-on experience in restoration processes by creating a kansu (handscroll).
The second week featured a study tour to the Chubu (central) and Kinki (southern-central) regions of Japan. Highlights included observing the use of byōbu (folding screens) and fusuma (sliding doors), in a traditional setting at Nagoya Castle. The tour also took the participants to Mino, where they witnessed the papermaking processes of Honminoshi, a technique designated as an Important Intangible Cultural Property of Japan. Additionally, the participants visited a traditional restoration studio in Kyoto that has been operating since the Edo period (1603-1867).
In the final week, the focus shifted back to practical work on the structure and handling of kakejiku (hanging scrolls), folding screens, and handscrolls.
In the post-course questionnaires, many participants expressed that they had gained a deeper understanding of the use of Japanese paper for conservation purposes. We hope that the techniques and knowledge acquired through this JPC course will be disseminated and adapted in the conservation and restoration of cultural properties overseas, and thereby contribute to their enhanced protection.
West entrance of the Central Tower before and after restoration (3D model created by Photogrammetry)
Stone conservation
Located in the northeastern area of the Angkor Monuments, one of the World Heritage Sites in Cambodia, Ta Nei is a Buddhist temple thought to have been built in the late 12th to early 13th century. Its Central Tower, about 15 meters high, is partly collapsed, but still has pediments with carved Buddhist motifs on all sides and a pedestal inside on which the main Buddha image is thought to have been placed.
The entrance frames on each side are made of sandstone, but the upper frames on both the east and west sides are broken and deformed, and they had been supported by wooden supports. During this visit, we carried out partial restoration work on the entrance components to structurally stabilize the east-west entrance of the Central Tower and to remove the wooden supports so that visitors can safely walk along the central axis of the temple while viewing the temple as its original appearance.
Prior to the restoration work, the restoration plan was proposed and approved at the international meeting of ICC-Angkor/Sambor Prei Kuk in March 2024 (see previous article here). Subsequently, the work began in June under the leadership of the Authority for the Protection and Management of Angkor and the Region of Siem Reap (APSARA). As part of its technical cooperation for this restoration project, the Tokyo National Research Institute for Cultural Properties (TOBUNKEN) dispatched two staff members (XVI field survey) from June 15 to July 2, 2024, and one staff member (XVII field survey) from August 7 to 11, 2024, for collaborative work with the APSARA staff. Specifically, the following procedures were followed: (1) dismantling and recording the sand stones composing the entrance and scattered stones in the surrounding area, (2) partial dismantling of the doorframes, (3) stone restoration, (4) reassembling, and (5) recording after restoration, which was successfully completed when the staff was dispatched in August.
Examination of structural members by master carpenters and staff from both Japan and Bhutan
The Lham Pelzom house
Since 2012, the Tokyo National Research Institute for Cultural Properties (TOBUNKEN) has been continuously engaged in research on vernacular houses in Bhutan, in collaboration with the Department of Culture and Dzongkha Development (DCDD), Ministry of Home Affairs, Royal Government of Bhutan. The DCDD promotes a policy of preserving and utilizing vernacular houses by integrating them into the legal protecting framework of cultural heritage, while TOBUNKEN supports the initiative from academic and technical aspects.
The Lham Pelzom house, located in Kabesa near the capital of Thimphu, is considered the oldest among about eighty vernacular houses that we have surveyed across Bhutan. This house is enclosed with rammed-earth outer walls that have few openings. Because it has very different characteristics from the current ordinary houses in Bhutan, we assume that it was built at the latest in the 18th century or earlier.
At the time of our initial survey in 2013, this house was already dilapidated. In 2017, the wooden parts, including the roof and floor of the upstairs, completely collapsed. Coping with this situation, the structural members scattered in the house were collected and stored, and a temporary roof was constructed to preserve the remaining structure of the outer walls. During the COVID-19 pandemic we could not conduct on-site activities, and the Bhutan side continued with the procedures to obtain cultural heritage status designation of this building. As a result of those efforts this house was successfully designated as a cultural heritage site in 2023, the first time for a vernacular house.
We dispatched four people, including two TOBUNKEN staff and two external experts from Japan, from August 12 to 23, 2024. The team surveyed the structural members as part of the restoration planning for this vernacular house with local staff, including DCDD officials. Dr. Alejandro Martinez, Associate Professor of Kyoto Institute of Technology, who had previously taken part in storing the members, worked to identify where each member was originally used. Mr. TOBASE Koji, master carpenter and Chairperson of the Japanese Association for the Conservation of Techniques for Traditional Architecture who experienced many restorations of traditional Japanese wooden buildings, examined each member for its reusability and discussed its restoration methodology. Nine Bhutanese master carpenters who are engaged in restoring historical buildings joined the activities. During the surveys, we were visited by H.E Mr. Tshering, Home Minister of Bhutan, and interviewed by the national TV station and a newspaper. This project attracts strong interest in Bhutan. We are continuing to carefully work on the overall restoration plan, considering the maximum conservation of its authenticity, and to support the tasks including the restoration cost calculation for securing the production budget on the DCDD side.
The surveys were conducted with the support of a JSPS Grant-in-Aid for Scientific Research (B) “Vernacular Stone Masonry Houses of Bhutan: A Study on the Architectural Characteristics and the Suitable Approach for Protection as Cultural Heritage” (Principal Researcher: TOMODA Masahiko).
Stone piece joining experiment
Site visit survey of stone sculpture conservation and restoration
The Japan Center for International Cooperation in Conservation is working with European experts to improve the current situation regarding the conservation and restoration of stone cultural properties in Japan.
From July 1 to 6, 2024, we visited Florence, Italy, and with the Opificio delle Pietre Dure and Italian national conservators of cultural properties, we conducted experimental research on reinforcing stone surfaces and joining stone pieces using restoration materials that are not available in Japan.
We also visited the conservation and restoration site of the stone sculptures installed in the Boboli Gardens, landscaped by the Medici family in the 16th century, to observe and deepen our knowledge on how to deal with various types of damage, such as cracks, delamination, and filling in missing areas. The methods used to control biodeterioration, which tends to occur due to the outdoor environment, are particularly interesting, and the way of thinking is also linked to conservation management. This was a great learning experience, as the methods are expected to be effective in Japan as well.
We have set a goal to continue our research to improve the current situation regarding the conservation and restoration of domestic stone cultural heritage, by continuing experimental studies and case studies, as well as deepening our links with experts in the field.
The Palatine Chapel of the Norman Palace
Stucco Decoration by Giacomo Serpotta (The Oratorio del Santa Cita)
Since 2021, The Japan Center for International Cooperation in Conservation has been involved in a research survey on stucco decoration and clay statues being conducted as part of the research project “Technology for the Conservation and Restoration of Cultural Heritage” program. The original research plan was to begin in a Mediterranean coastal area where stucco as a building material was beginning to be used as a material for decoration and for the production of clay statues. Although the spread of coronavirus infection had forced changes to the research plan, including a switch to a domestic survey, the relaxation of waterfront measures has led to a return to the original plan and activities are now being resumed in Europe.
From July 5 to July 7, 2024, we visited Palermo, Italy, to discuss cooperation with the local Superintendent of Cultural Heritage regarding research on archaeological sites from the period during which the Greek colonial city was built. We also visited the Arab-Norman buildings, including Monreale Cathedral, which has been designated a World Heritage Site thanks to their efforts, and a church with stucco decorations by Giacomo Serpotta, a sculptor who was active mainly in the 16th and 17th centuries, and we briefly investigated the conservation and restoration efforts.
In the future, through research into stucco decoration techniques and materials for archaeological sites in Sicily, we will deepen our understanding of their structure and characteristics, and continue our research into their conservation and restoration methods and site management.
Comprehensive survey to create a list of heritage houses in Old Kirtipur
Located about 4 km southwest of the capital Kathmandu, Kirtipur is listed on the tentative list of World Heritage Sites as a medieval Newari settlement with well-preserved monuments within its core area. However, due to the rapid urbanization and the demolishing and reconstruction of historic houses after the Gorkha earthquake in 2015, the historic townscape of Kirtipur has been drastically changing. A major challenge is that, while public monuments such as Royal Palaces, Temples, and Shrines are protected under the laws in Nepal, there is no effective regulatory framework for protecting historic houses.
To tackle this issue, a joint research project between Kirtipur Municipality and Tokyo National Research Institute for Cultural Properties (TOBUNKEN) on the preservation and utilization of historic houses in Kirtipur was launched in October 2023.
During the dispatch of two staff members of TOBUNKEN from July 16 to July 23, 2024, an additional architectural survey was conducted on a house that had been selected as a pilot case study. In collaboration with engineers of the municipality and other Nepalese experts, a detailed measurement survey, 3D digital documentation, and survey on the traces indicating the building’s transitional history were carried out. In addition, with the cooperation of Dr. Lata Shakya, Project Researcher of Ritsumeikan University, interview surveys were carried out with house owners and a local historian, and a comprehensive survey to create a list of the privately owned historic houses in Kirtipur was also conducted under the direction of Dr. Bijaya Shrestha, an expert on the conservation of historic settlements.
These surveys gradually unveiled history of the house; the target house is assumed to have been used as an administrative office of the ancient Kirtipur Palace and retains significant importance with a well-preserved original façade among the existing historic houses that constitute the townscape of Kirtipur.
The house faces an urgent need of repairs due to termite damage and rainwater leakage. For historic houses facing difficulties regarding various practical factors such as lack of repair budget and ownership issues, clarifying the historic value and promoting wider recognition as a cultural heritage site could be an important step towards the preservation and the conservation.
Through trials and dialogues with relevant people, including house owners, administrative officers, and various experts, we would like to explore ways of safeguarding private historic houses that not only carry on the cultural richness of the town, but also present a link towards its sustainable development.
Work on the pyramid sequence worksheet
Making a puzzle of an ancient Egyptian boat
Tokyo National Research Institute for Cultural Properties has organized the Cultural Heritage Kids Workshop starting from 2023 to promote interest in cultural heritage to the next generation, especially for elementary school children. The second workshop was held on July 27, 2024, and 25 children and their families in total over 70 people attended.
The main theme, “Cultural heritage in Ancient Egypt,” was taken over from the last workshop, but for the second workshop we added new programs: a worksheet for creating a sequence of pyramids, an introduction to excavations in Egypt, and a three-dimensional puzzle of an ancient Egyptian boat. Each program had objectives of enabling the children to understand archaeological chronology, to learn the steps involved from the discovery of an archaeological site to the research and conservation work, and to study the meaning of some ancient Egyptian script and the ingenuity of boat builders. Children could learn about the fundamentals of academic studies on cultural heritage through this workshop.
Holding such workshops not only provides children with the opportunity to increase and renew their interest in mysterious aspects of cultural and historic heritage, but it is also beneficial to the generation of their parents, because we can introduce them to the research and the significance and background of cultural heritage studies. We will continue to hold workshops based on the results of our research and studies that are unique to the research institution.
Main venue, Bharat Mandapam
The Japanese delegation observes deliberation on the Sado Island Gold Mines
The 46th session of the World Heritage Committee was held in New Delhi, India from July 21 to 31, 2024, in which we four members of the Tokyo National Research Institute for Cultural Properties (TOBUNKEN) participated as observers, three from the Japan Center for International Cooperation in Conservation and one from the Department of Art Research, Archives and Information Systems.
The Committee brings together representatives of the State Parties to the World Heritage Convention and advisory bodies to deliberate on new nominations, state of conservation etc., of World Heritage sites. Twenty-four new sites were added to the World Heritage List this time, bringing the total number to 1,223. Regarding the “Sado Island Gold Mines,” widely reported in Japan, ICOMOS had recommended reconsideration of the contents and boundaries of the property and requested additional information from the State Party to facilitate the boundary revision. Subsequently, the handling of correspondence by the Japanese government led this site to an inscription on the List, decided unanimously by the Committee. In the deliberations on the state of conservation, inscription on the List of World Heritage in Danger was avoided the for all four properties previously recommended, including Stonehenge in the UK, due to a planning of highway construction at its boundary. On the other hand, the St. Hilarion Monastery in Palestine, currently at risk of destruction from war, was newly nominated and simultaneously inscribed on the List of World Heritage in Danger.
At side events held during the session, the latest trends related to World Heritage Sites were introduced by various State Parties and organizations. Outside of the plenary session, a series of forums was organized for site managers and young professionals, who held lively discussions on pressing issues such as sustainable heritage management.
Participating in a World Heritage Committee session on-site is a very rare opportunity to learn about the latest international trends, hardly obtainable online. TOBUNKEN will continue to disseminate information, including the content of this event, through such measures as hosting a World Heritage Seminar this November.
Presentation of the Declaration to the 46th World Heritage Committee (Photo by Archaeological Survey of India)
Site visit to the World Heritage site, Taj Mahal (Photo by Archaeological Survey of India)
From July 14 to 23, 2024, Mr. KANEKO Yutaro, Research Fellow of the Japan Center for International Cooperation in Conservation (Secretariat of the Japan Consortium for International Cooperation in Cultural Heritage), participated in the “World Heritage Young Professionals Forum 2024,” held in New Delhi, India, as part of the 46th World Heritage Committee.
This forum is a key initiative of UNESCO’s World Heritage Education Program, aiming at promoting intercultural understanding and exchange through interactions among young people from around the world and experts in cultural and natural heritage, as well as exploring new roles for the youth in heritage conservation. For this year’s forum, 50 participants were selected (20 participants from India and 30 from other countries) from 31 countries across Asia, Africa, Europe, Latin America, and the Pacific Islands out of more than 3,500 applicants. The participants discussed the issues and opportunities related to World Heritage sites from their respective national and professional perspectives. Under the main theme, “World Heritage in the 21st Century—Enhancing Capacities and Exploring Opportunities for Youth,” the program focused on four key topics: climate change, innovative technologies, communities, and sustainable tourism. The participants engaged in a rich program to learn about World Heritage from various perspectives, which included site visits to museums and World Heritage sites such as Taj Mahal, lectures by heritage experts, and discussions and presentations among the participants. At the end of the forum, a statement summarizing recommendations from young professionals regarding World Heritage was prepared and presented to the World Heritage Committee, based on the knowledge and experiences gained from the forum.
Mr. KANEKO was deeply inspired by the young professionals from African and Latin American countries who are playing leading roles at the stages of nomination, protection, and management of World Heritage sites, actively addressing various challenges faced by these sites. However, many participants from these countries pointed out that fragile protection systems due to a lack of funding and human resources are common, highlighting the need for Japan to extend further support in the field of international cooperation in cultural heritage. As one of the young professionals who will be responsible for future heritage protection, he will continue to raise awareness of these issues and strive to contribute to the protection of heritage both domestically and internationally.
UNESCO Website for the World Heritage Young Professionals Forum
https://whc.unesco.org/en/youth-forum/
Meeting at the Nevşehir Conservation and Restoration Regional Laboratory
Courtesy visit to the Deputy Governor of Nevşehir Province
The Japan Center for International Cooperation in Conservation, in cooperation with local specialized institutions and universities in Turkey, are conducting a joint research project on the conservation and restoration of mural paintings on the interior walls of St. Michael’s Church (Keşlik Monastery) in Cappadocia, Turkey. Last year, a research plan was prepared based on field surveys, and after deliberations held by the Ministry of Culture and Tourism of the Republic of Turkey and an expert committee, the project was officially approved for implementation.
Survey for the development of a conservation and restoration research plan at St. Michael’s Church (Keşlik Monastery) :: 東文研アーカイブデータベース (tobunken.go.jp)
In response, we visited the site from June 25 to 29, 2024, to discuss environmental arrangements that will be important for conducting research activities safely in the future. The discussions were conducted with the cooperation of Mr. Hatice Temur YILDIZ, Director of the Nevşehir Conservation and Restoration Regional Laboratory, and Mr. Levent Ak, a member of the Urgup City Council and Director of the Cappadocia Tourism and Regional Infrastructure Services Association. The discussions were very fruitful, as we had the opportunity to exchange views with the Deputy Governor of Nevşehir and the Mayor of Ürgüp. As a result, we were able to establish a cooperative framework with public organizations in the Cappadocia region, as they agreed to cooperate with us on the construction of scaffolding and installation of facilities for water and electricity in the church.
We will continue our research activities to meet the expectations of the local people and to contribute widely to the conservation and restoration of cultural properties in the Republic of Turkey.
Survey at Sakteng village
Devastating remains of a manor house (Phongmey Nagtshang)
Since 2012, the Tokyo National Research Institute for Cultural Properties (TOBUNKEN) has been continuously engaged in research on vernacular houses in Bhutan, in collaboration with the Department of Culture and Dzongkha Development (DCDD), Ministry of Home Affairs, Royal Government of Bhutan. The DCDD promotes a policy of preserving and utilizing vernacular houses by integrating them into the legal protecting framework of cultural heritage, while TOBUNKEN supports the initiative from academic and technical aspects.
We conducted the first field survey for FY 2024 from May 11 to 23. For this purpose, three staff members of TOBUNKEN and two external experts from Japan were dispatched. Together with two DCDD officials, we surveyed mainly stone masonry houses in two eastern Dzongkhags (provinces): Trashigang and Trashiyangtse.
The current survey area included three villages that we had visited from April to May 2023 for the supplemental survey, in addition to three villages that were new for us.
In the Kheni village of Trashiyangtse Dzongkhag, where we visited first, we completed a detailed survey on all of five houses considered as very old in the village, including measurement taking and interviews with the residents of the houses. For three of the houses that had been surveyed last year, supplemental surveys were conducted. The other houses were also fully surveyed.
Next, at Merak and Gengo villages in Merak Gewog of Trashigang Dzongkhag, we conducted a supplemental survey on one house and new surveys on six other houses. All of these houses are single-story buildings with main entrances on the gable side. Many of them have a living room with partial wooden outer walls at the front side of the attic level. This building type is peculiar to these areas in which transhumant ethnic minorities live. In the survey on such regionally-unique-style houses, we identified 67 houses across Merak village, and revealed that around half of the houses, especially those in the center of the village, were in this style.
We then visited Sakteng Gewog of Trashigang Dzongkhag for the first time, where the same ethnic group lives. We confirmed that a similar style of houses to that of Merak existed there. However, as some of those houses were surrounded by stone fences with gates, the scenery inside the village was very different. We conducted detailed surveys of five houses in total in both adjacent Sakteng and Tengma villages. We managed to collect valuable examples, including small houses built totally of wood and water mills for producing flour. The living area of the same ethnic group expands to the neighboring Northeastern region of India. We are informed that houses of similar styles exist there, in which we are very much interested.
Additionally, we surveyed two old houses of feudal lords in Phongmey village in the same Dzongkhag. Both of them were no longer in use. One of them was severely damaged with largely deformed stone walls and in a risky condition. There is concern that such case can rapidly increase due to the depopulation in countryside. Even though it is difficult to take immediate conservation measures, it is at least required to grasp and document the locations and current situations of these old houses.
The surveys were conducted with the support of a JSPS Grant-in-Aid for Scientific Research (B) “Vernacular Stone Masonry Houses of Bhutan: A Study on the Architectural Characteristics and the Suitable Approach for Protection as Cultural Heritage” (Principal Researcher: TOMODA Masahiko).
Conference program
Scene from the venue, “Convent of Fuligno”
Perugino (real name: Pietro Vannucci) was one of the leading painters of the Italian Renaissance. He left behind numerous works of art, including a mural painting in the Sistine Chapel of the Vatican, and was a master of the young Raffaello, who praised him as a “God-Like Painter.” In 2023, the 500th anniversary of Perugino’s death, numerous exhibitions and symposia were held in Italy and abroad.
Joining with this commemoration, the Tokyo National Research Institute for Cultural Properties, in collaboration with Elio Conti Historical Studies Association, the National Research Council of Italy Institute of Heritage Science, the Superintendence of Archaeology, Fine Arts and Landscape for the metropolitan city of Florence and the provinces of Pistoia and Prato, and the University of Applied Sciences and Arts of Southern Switzerland, organized the international conference, “Perugino and Florence,” held over two days, May 14 and 15, 2024, at the “Cenacolo di Fuligno” (‘Convent of Fuligno’) in Florence. The conference brought together experts from the fields of art history, conservation, and other fields, to reassess the value of this great painter through presentations on his work. We also gave a presentation on an interdisciplinary technical study of the two remaining mural paintings in Florence, and discussed future conservation, restoration, and maintenance methods.
In the future, in cooperation with local experts, ways of improving the conservation of Perugino’s painting of the Last Supper, which is now in a museum in the former Convent of Fuligno in Florence, will be carried out through scientific research and other means.
Seven-story stone pagoda at Kandani Shrine
Survey of similar cases for the conservation and restoration of stone cultural properties in Europe
Stone is a material that mankind has utilised for cultural life since ancient times. It has a wide range of uses, including as tools, building materials, and sculptures, many of which are classified as stone cultural heritage and have been handed down through conservation efforts. Although the definition of stone as cultural heritage differs between Japan and the rest of the world, various efforts have been made to conserve and restore stone materials around the world. In particular, Europe, known as having had ‘stone culture’ as opposed to Japan’s ‘wood culture,’ has been leading the world in advanced research and studies, and the results of these studies can be used for the conservation of stone cultural heritage in Japan.
Many stone cultural heritage objects are conserved outdoors, as they are more durable than timber in terms of hardness and stability. Therefore, they are often subject to deterioration and loss due to external factors such as weather, natural disasters, and the surrounding environment, and it is necessary to take measures from a variety of perspectives when considering their conservation. This is why it is important to look at many examples, share the problems with experts in each field, and carry out research to find solutions.
On February 16, 2024, we visited Kandani Shrine in Sakaide City, Kagawa Prefecture, to conduct a survey for the conservation of the seven-storey stone pagoda standing on the shrine grounds. The stone pagoda, built of lapilli tuff, is in a very poor state, with the base eroded by rainwater, and cracks and losses are visible. The situation was shared with European experts, and on March 1, 2024, we held meeting in Florence with Italian national conservators of cultural properties regarding a survey of similar examples and a research plan.
In the future, we will engage in research that will lead to improvements in the current state of conservation and restoration of stone cultural properties in Japan.
Hall of the Five Hundred in Palazzo Vecchio
Comparative study of marble sculpture and clay statues using 3D
The Japan Centre for International Cooperation in Conservation is involved in a research survey on stucco decoration and clay statues under the research project “Technology for the Conservation and Restoration of Cultural Heritage” program.
As part of this project, we visited Florence from February 26 to March 2 and from March 10 to March 12, 2024, to carry out a survey of a statue by the late Renaissance and Mannerist sculptor Giambologna, ‘Florence triumphant over Pisa,’ in collaboration with the Superintendency of Archaeology, Fine Arts and Landscape for the metropolitan city of Florence.
This work, which is currently on display in the Hall of the Five Hundred in Palazzo Vecchio facing Piazza della Signoria, was originally created as a prototype for a work in marble, and a marble work based on it is on display at the National Museum of the Bargello. In this study, the shapes of the two pieces were compared using 3D scanning as part of the verification of the production technique. In the future, the research will move on to focus on the internal structure, which is important for the production of the clay statues.
There are many clay statues existing in Japan and overseas, but surprisingly, methods for their conservation and restoration have not yet been established. We will continue our activities with the notion that relevant research surveys will lead to the development of conservation and restoration methods.
Investigation of the condition of mural paintings in a church using a checklist
Discussions with local experts
In Istria, located in the northwestern part of Croatia, numerous mural paintings were painted in churches from the Middle Ages to the Renaissance. Although there are as many as 150 such paintings in Istria, there are serious problems with their maintenance and management. To improve this situation, the Japan Centre for International Cooperation in Conservation is conducting a research project to establish a method for documenting the state of conservation in cooperation with the Ministry of Culture and Media of the Republic of Croatia, the Historic and Naval Museum of Istria, and the University of Zagreb.
From March 4 to 8, 2024, we visited the site, prepared a checklist for the conservation status of the mural paintings, and conducted an implementation test on two churches located in the center of the Istrian Peninsula, with the aim of ensuring that experts engaged in the conservation and maintenance of the mural paintings would be able to efficiently utilize the information. As a result, we were able to obtain accurate information in a short period of time and confirmed that the information could be used to develop a policy for the future conservation of the murals paintings.
In the future, we will discuss the content of the checklist items to make it more complete and aim to build a digital archive through repeated implementation tests.
Interview at the Spanish Cultural Heritage Institute
Interview at the Andalusian Historical Heritage Institute
The Japan Center for International Cooperation in Conservation has been collecting and translating foreign laws and regulations on the protection of cultural properties in various countries since FY 2007, and has so far published 28 volumes. The project aims to contribute to Japan`s international cooperation and to provide a reference for reevaluating Japanese protection systems in the field of cultural properties. In this regard, we conducted a field survey in Spain, the next target country, from March 19 to 28, 2024.
Spain used to have a nationally centralized protection system, but since the 1980s, authority has been diverted to the states (comunidad autónoma). Due to its vast territory and cultural diversity, there are differences in protection from state to state. In recent years, many states have enacted legislation regarding cultural landscapes, industrial heritage, and intangible heritage. The Spanish-designated cultural properties, denominated “Bien de Interés Cultural,” are just a tip of the iceberg of “Bien de Patrimonio Historico,” identified by state Institutes for Historic Heritage. Notable is that the last category, mostly not designated, is in some way protected by local urban planning.
Through this survey, we were able to get a glimpse of the protection of cultural properties in Spain, hardly introduced to Japan until now. Actually, the state protection of cultural properties is obliged to comply with Spanish national and state laws, of which we plan to conduct research in FY 2024 and FY 2025, respectively. Since some state protection systems are well-organized, we can reconsider using such laws as reference for reevaluation of the protections of cultural properties in Japan.
