GOOD DESIGN Marunouchi, with the special sponsorship of Mitsubishi Estate Co., Ltd., will be hosting its third annual exhibition, "TOKYO WOOD LIFE 2040: Mountains, Trees, and Tokyo," from May 1st Fri to May 31st Sun, 2026. This year, the exhibition will again focus on the relationship between Japan's forests and cities, and will feature numerous Events including an exhibition on architecture and design, a film festival, a market, forums, excursions, and a stamp rally. It will showcase strategies and the latest practices for transforming urban life into a "WOOD LIFE" by 2040, drawing on diverse fields such as architecture, manufacturing, urban development, and community design.

◼︎ Overview of "TOKYO WOOD LIFE 2040: Mountains, Trees, and Tokyo"

Dates: May 1st Fri- May 31st Sun, 2026. Venue 3 and 4 will be open from May 9th Sat to 10th Sun Admission is free to all Venue.
・1Venue: Urban Wooden Studio2026"GOOD DESIGN Marunouchi Marunouchi, Chiyoda Ward 3-4-1 Shin-Kokusai Bldg. 1F)
・ The2Venue Tokyo Wood Lab Shin-Tokyo Bldg. 1F Lobby (Marunouchi, Chiyoda Ward) 3-3-1)
・ The3Venue "Yurakucho Mokuichi" Tokyo International Forum Lobby Gallery (Marunouchi, Chiyoda Ward 3-5-1)
・ The4Venue "Mountain and Tree Film Festival" Tokyo International Forum hole D1 (Marunouchi, Chiyoda Ward 3-5-1)
・ Forum "Mountains, Trees, and Tokyo Forum" Conference Square M+ Success (Marunouchi, Chiyoda-ku) 2-5-2 Mitsubishi Bldg. 1F)
・ Closing Forum: "Let's talk about the future of mountains, trees, and Tokyo" 3x3Lab Future (Otemachi, Chiyoda Ward) 1-1-2 Otemon Tower ENEOS building 1F)
・ Excursions will be held throughout the event. & Stamp rally

exhibition URL: https://www.jidp.or.jp/ja/2026/04/09/tokyowoodlife2040_2?query=tagNames%3DEVENT
MAPClick here

◼︎ Key points to watch out for this year
1. The first-ever "Mountain and Tree Film Festival" will be held, offering an experience of "living with mountains and trees" through film.
2. Learn about the latest urban timber construction technology and design! "Urban Timber Studio" 2026"
3. Fresh bounty from mountains all over Japan delivered directly! "Yurakucho Mokuichi"
4. Experience the grand cycle from forests to urban architecture, and the local cycle that begins with the trees in parks, at "Tokyo Wood Lab".
5. An "excursion" to experience Tokyo's mountains, trees, and wooden architecture will be held for the first time.
6. Connecting wood and architecture through design 3 The "Forum" section explores the wooden architecture of architect Hiroshi Naito!

◼︎ Venue 1: "Urban Timber Studio 2026 - Design that showcases wood"

Venue: GOOD DESIGN Marunouchi (1F Shin-Kokusai Shin-Kokusai Bldg., 3-4-1 Marunouchi, Chiyoda-ku)
Dates: May 1st Fri- May 31st Sun, 11:00 - 20:00 / Open every day during the exhibition period, free admission.
Exhibitors: Kajima Corporation / Shimizu Corporation / Takenaka Corporation / Toda Corporation / Nikken Sekkei Ltd. / Nippon Sekkei Ltd. / Blue Studio Inc. / Mitsubishi Jisho Sekkei Inc.
Cooperation: Koshihara Laboratory, Institute of Industrial Science, University of Tokyo / Hagiuda Seminar, Department of Architecture and Design, Faculty of Architecture and Design, Kyoritsu Women's University

Leading construction and design companies in Japan will present their latest urban wooden construction projects.
- A 1/500 scale 3D model map is on display, mapping the urban wooden structures, street trees, Rooftop greenery, and wooden spaces in the Marunouchi, Ginza, and Nihonbashi areas. It offers an overview of Tokyo's surprisingly numerous "trees in the city" and its role as a "second forest, an urban timber yard."
A university student studying architecture proposes a "Neo-KK Line" on the KK Line (former Tokyo Expressway).
The "Urban Timber Studio" will present the latest projects in "urban timber construction," which involves the construction of mid-to-high-rise wooden buildings in urban areas. The studio will introduce the evolution of urban timber projects since 2000, which have rapidly increased in scale in recent years, and explore future possibilities. It will also consider architecture and urban development that balances rich urban spaces with the sustainable use of wood in the Tokyo Station area, which is currently undergoing redevelopment.
This year's theme is "Technologies and designs for making spaces look attractive with wood," and leading Japanese design and construction companies will present 14 projects (planned) mainly in the Tokyo metropolitan area using images, videos, models, and other materials.

[Urban Wooden Structure Studio 2026: Talk and Networking Event]
Venue: DMO Tokyo Marunouchi (Marunouchi Marunouchi Nijubashi Bldg.)
Dates: May 11th Mon- 15th Fri, 19:00 - 21:30
Talk session: Free / Networking event: 1,000 yen
The event schedule, information on participating companies, and registration will begin around April 15th on Peatix.
We will be holding daily talk Events featuring project managers from the Urban Wooden Construction Studio.
The exhibition director will act as interviewer, and we will hear firsthand accounts from those involved in the design and construction of urban wooden and wood-based spaces, including the ingenuity, challenges, and joys they experienced. Following the talk, there will be a networking event open to everyone.

◼︎ Venue 2: "Tokyo Wood Lab - Urban Wooden Construction Utilizing Mountain Wood, Urban Forestry Utilizing City Wood"

Venue: Shin-Tokyo Bldg. 1F Lobby (3-3-1 Marunouchi, Chiyoda-ku)
Dates: May 1st Fri- May 31st Sun, 11:00 - 20:00 / Open every day during the exhibition period, free admission.
Cooperation: Daitec Co., Ltd. / Urban Forestry Co., Ltd. (Yoshiyuki Wakuguchi)
Mountain trees and urban wooden construction
This exhibition introduces building materials such as solid large-section lumber, laminated timber, CLT, and LVL, which make use of large-diameter trees that have passed their felling age, as well as trees in various states such as slight bends and branching, and the urban wooden spaces that are created from them.
- Trees in the city and urban forestry
Urban forestry considers street trees and park trees, which are sometimes considered a "liability" due to the need for cleaning, maintenance, and the risk of falling, as "unused timber." We propose enriching local spaces by repeatedly maintaining trees planted in the community, enjoying their fruits and leaves, and then appropriately felling and utilizing them.
The challenges related to wood in Japan extend beyond mountain forests to urban areas, where fallen trees have been a recent phenomenon. This Venue focuses on "mountain trees and urban timber construction" and "urban trees and urban forestry." We will visualize various aspects of using wood in cities and research "WOOD LIFE" that can be created by balancing "large-scale cycles" and "small-scale cycles."

◼︎ Third Venue: "Yurakucho Mokuichi" (Wood Market)

Venue: Tokyo International Forum Lobby Gallery (3-5-1 Marunouchi, Chiyoda-ku)
Dates: May 9th Sat & 10th Sun 2026, 11:00 AM - 5:00 PM

Exhibitors: Yama no Daigomi Project Council / Japanese Forest Wood Utilization Shops / Tokyo no Ki / KENZI MURABAYASHI / Office Mokon / Tosa Ryu Co., Ltd. / Bamboo Fujieda / Yamanohata to Sora / Shimpei ARIMA / Takase Fumio Shoten Co., Ltd. / Design KYOTO for Living with Wood / Mori Town, Hokkaido / Hokkaido University / Shinkiba Mobile Timber Market
Shops: Tokyo Forest and Market
This two-day market brings together producers and creators to offer products, art, and Accessories made from wood sourced from forests and trees across Japan, from Hokkaido to Miyazaki. Shops offer an easy way to enjoy woodworking.

◼︎ Venue 4: "Mountain and Tree Film Festival"

Venue: Tokyo International Forum D1 (3-5-1 Marunouchi, Chiyoda-ku)
Dates: May 9th Sat & 10th Sun 2026, 11:00 AM - 7:30 PM
Admission and viewing are free (advance reservations required).
Application and details: https://twl26-filmfes.peatix.com
・Works screened on Sat May 9th *Director talks will be held before and after the screening.
"FOREST TRAIL" (Director: Yuta Nakamura) *
"From the Forest of Satouma - A Visual Guide to the Ancient Yet New Technique of Horse Logging that Utilizes the Forest" (Director: Aiko Odachi)
"The Road to the Gold Mine, a Hundred Years of Light." (Director: Honami Sugiura)
"Shirazu" (Director: Senzo Ueno)
"Forest Architect - The Person Who Envisions the Future of Forests" (Director: Harumi Iguchi)
"Let's preserve that mountain for our children: The miraculous evergreen broadleaf forest of Aya, Miyazaki" (Produced by Toshiko Toriyama + Fiona)
"The Life Cycle of Obi Cedar" (Produced by: Mitsuaki Kawagoe) *
Films showing on May 10th Sun *Director talks will be held before and after the screening.
"Theatrical Version: Bears and Democracy" (Director: Nao Ikushima) *
"The Karma of Kozue Hayashi" (Director: Tetsichiro Tsuta)
"Ask the Demon: The Last Will and Testament of Master Carpenter Tsuneichi Nishioka" (Director: Yuji Yamazaki)
"Forest Listening" (Director: Shohei Shibata) *
Over two days, we will be screening 11 films that focus on work and life related to mountains and trees across Japan.
Focusing primarily on documentaries, the film explores the mountains and trees from the perspectives of various individuals, spanning from the past to the present.
We will be holding two director's talks each day, inviting the director and other staff members to discuss the background of the project and filming.

◼︎ TOKYO WOOD LIFE 2040: Mountains, Trees, and Tokyo Forum

Date: May 8, 2026 Fri
Venue: Conference Square M+ Success (Mitsubishi Bldg. 1F, 2-5-2 Marunouchi, Chiyoda-ku)
Admission and attendance are free (advance reservation required).
Application and details: https://twl26-forum.peatix.com
・ Part 1 13:30-15:15 "Urban Timber Construction Utilizing Large-Diameter Timber [Addressing the Declining Birthrate and Aging Population in Mountainous Areas through Architecture]"
Panelists: Kan Yasuhara (Co-founder of SALHAUS / Professor, Graduate School of Engineering, The University of Tokyo) / Michikazu Suzuki (Director and General Manager, Hokkaido Branch Office, Hokkai Shokusan Co., Ltd.) / Masashi Suzuki (Manager, Planning and Sales Department, Daitec Co., Ltd.)
・ Part 2 16:00-17:45 "Urban Wooden Architecture in the Region Using Diverse Woods [Integrating Forest Diversity Through Architecture]"
Panelists: Hiroki Akiyoshi (CEO of VUILD Inc., Architect, Meta-Architect) / Yuhei Koyanagi (President and CEO of Forest Partners Inc.) / Yuma Ogata (Architect, Architectural Design Department 2 and Wood Construction Lab, Mitsubishi Jisho Sekkei Inc.)
・ Part 3 18:30-20:30 "Learning about the techniques and design of wooden architecture"
Speakers: Hiroshi Naito (Architect, Professor Emeritus at the University of Tokyo, President of Tama Art University), Hitoshi Okamura (CEO of KAP Co., Ltd.)

◼︎ Closing Forum: "Let's talk about the future of mountains, trees, and Tokyo"

Date: Sat May 30, 2026, 17:00 - 18:30
Venue: 3x3Lab Future (1F Otemon Tower/ENEOS Building 1-1-2 Otemachi, Chiyoda-ku)
Admission and attendance are free (advance reservation required).
Application and details: https://twl26-closingforum.peatix.com
Guests: Zentaro Kosaka (Director-General, Forestry Agency) and Shogo Shukumoto (Director-General, Housing Bureau, Ministry of Land, Infrastructure, Transport and Tourism)
Five years have passed since the enactment of the "Act on the Promotion of Wooden Construction in Cities" (officially: "Act on the Promotion of the Use of Wood in Buildings, etc., to Contribute to the Realization of a Decarbonized Society"), which is being promoted jointly by the Ministry of Agriculture, Forestry and Fisheries and the Ministry of Land, Infrastructure, Transport and Tourism. We have invited the Director-General of the Forestry Agency and the Director-General of the Housing Bureau of the Ministry of Land, Infrastructure, Transport and Tourism to discuss this initiative, which promotes the use of wood not only in public buildings but also in private buildings in general, together with the director of this exhibition.

◼︎ Excursion

Held periodically throughout the event (advance reservation required) / Reservations open on Peatix from mid-April
Details of the program will be released sequentially as soon as the dates are decided.
In addition to experiencing the latest urban wooden construction spaces, participants will visit activity centers related to urban development, trees, and greenery in the city, learning through hands-on experience.
- Monday, Mon 11th, 10:00 AM - 12:00 PM: "Walking through the 100-Year Forest of Meiji Jingu Shrine"
• Thu, May 14th, 1:00 PM - 3:00 PM: "Shimokita Gardening Club Activity Experience"
-Tue time TBD: "Urban Wooden Structure Tour & Lecture: Rikkyo University Ikebukuro Campus Building 19 and other locations"
• Wed May 20th, 13:00-14:30 "Urban Wooden Construction Site & Recreation: OS melia"
• Thu, May 21st, 16:30-18:00: "Urban Wooden Building Tour & Lecture: TODA Building"
• Fri, May 22nd, 1:00 PM - 4:00 PM: "Learning about Wood and Urban Wooden Construction in Shin-Kiba, the Town of Timber"
-Sat time TBD: "Practical Urban Forestry / Building Houses and Living with City Wood"
-Tue, May 26th: Time TBD "Tokyo Chainsaws' All-inclusive Mountain Opening" and other events TBD

◼︎ Collaboration Point and Stamp Rally Event [May 1st Fri- May 31st Sun]

A stamp rally will be held, visiting a total of nine locations: the official Venue (Venue 1 and 2) and the following seven partner locations. Those who complete the rally will be entered into a drawing to win prizes provided by each participating company. Furthermore, everyone who completes all 11 locations, including the official Venue 3 and 4 (limited to May 9th and 10th), will receive an original "Mountains, Trees, and Tokyo" badge. (For details, please see the "Mountains, Trees, and Tokyo Events Tabloid," which will be available from the end of April at GOOD DESIGN Marunouchi and other locations.)
Participating stores: garageTOKYO / Slit Park YURAKUCHO / Mie Terrace / TOKYO CAMP/FinGATE TERRACE / Ginza Kishu Binchotan Shops Tenohira / Ginza NAGANO / NORTHERNWOOD GINZA

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director:
Takeichi Inoue (Chief Specialist, Innovation Strategy Center, Japan Research Institute, Ltd. / Visiting Researcher, Musashino Art University)
Aya Utsumi (Representative Director of Aya Utsumi Co., Ltd. and Ryuto Hasegawa Architectural Design Office / Board Member of NPO team Timberize)
Mikio Koshihara (Professor, Institute of Industrial Science, University of Tokyo / Board Member, NPO team Timberize)
Koichi Wakasugi (Professor, Musashino Art University / Director, Social Creative Research Institute)
Designers: DO.DO. Kei Harada (Space) / Power Place Co., Ltd. Kenji Shimotsuma (Graphic)
Organizer: Japan Institute of Design Promotion Special Sponsor: Mitsubishi Estate Co., Ltd.
Sponsored by: Kajima Corporation / Shimizu Corporation / Takenaka Corporation / Toda Corporation / Nikken Sekkei Ltd. / Nippon Sekkei Ltd. / Blue Studio Inc. / Mitsubishi Jisho Sekkei Inc.
Supported by: Ministry of Land, Infrastructure, Transport and Tourism / Forestry Agency / Tokyo Metropolitan Government / Tokyo Association of Architects
Cooperation: NPO team Timberize / Japan All-Japan Cedar Club