Fab 40: The Sea Forest, Tokyo Bay

Few have heard of Tadao Ando the environmentalist. But since 1995, the Pritzker Prize-winning architect has been working hard on greening Japan, planting trees alongside students, volunteers, Nobel laureate Wangari Maathai and U2 singer Bono. When Tokyo launched its bid for the 2016 Olympics, Ando was asked to join a Grand Design panel, tasked with reshaping the city for the Games. His first thoughts were on bringing more trees to the capital.
But rather than push for corporate or government funding, the 68-year-old has called on individuals to invest in their own future by each donating ¥1,000 (£6.45) to help buy the 500,000 saplings he needs to turn an 88-hectare island of garbage piled up in Tokyo Bay into “Umi no Mori” or the Forest on the Sea.
“The garbage is sandwiched inside landfill extracted from the construction sites of Tokyo,” Ando explains. “The surface layer is covered by soil and leaf compost. The garbage underneath will naturally break down. There’s no toxicity, but we do have to extract methane gas, which is produced during the process of transformation of the garbage. We collect this methane gas and use it as fuel for power generation.”
We suggest to Ando that it’s unusual for a builder of buildings such as himself to take up the cause of greening Japan – something he is also doing through his Setouchi Olive Foundation, which is well on the way to planting one million trees. “Designing architecture is very similar to designing environments," he replies, “The aim of the greening projects in which I’m involved, including Umi no Mori, is to recover the environment and scenery for future generations.”
by Gordon Kanki Knight
Receive our daily digest of inspiration, escapism and design stories from around the world direct to your inbox.
Ellie Stathaki is the Architecture & Environment Director at Wallpaper*. She trained as an architect at the Aristotle University of Thessaloniki in Greece and studied architectural history at the Bartlett in London. Now an established journalist, she has been a member of the Wallpaper* team since 2006, visiting buildings across the globe and interviewing leading architects such as Tadao Ando and Rem Koolhaas. Ellie has also taken part in judging panels, moderated events, curated shows and contributed in books, such as The Contemporary House (Thames & Hudson, 2018), Glenn Sestig Architecture Diary (2020) and House London (2022).
-
Meet Malak Mattar, the Palestinian artist behind the 'Together for Palestine' concert at London's Wembley Arena
The London-based artist curates a landmark concert of music and art in support of Gaza, alongside Brian Eno, James Blake, Jamie xx, Neneh Cherry and more
-
A new coffee table book proves that one designer’s trash is another’s treasure
The Rizzoli tome, launching today (16 September 2025), delves into the philosophy and process of Retrouvius, a design studio reclaiming salvaged materials in weird and wonderful ways
-
A carbon-emission-busting house, yeast-biomass building, and more ‘Designs for a Cooler Planet’
‘Designs for a Cooler Planet’ returns to Aalto University in Finland as part of the annual Helsinki design and architecture week, highlighting buildings, materials and solutions towards a better future
-
A Tokyo home’s mysterious, brutalist façade hides a secret urban retreat
Designed by Apollo Architects, Tokyo home Stealth House evokes the feeling of a secluded resort, packaged up neatly into a private residence
-
How an icon of Japanese Metabolist architecture took on a life of its own – even after its destruction
When Kishō Kurokawa designed the modular Nakagin Capsule Tower more than 50 years ago, he imagined it boarding ships and travelling the world. Now it has, thanks to a new show at MoMA
-
Aston Martin completes its first Tokyo townhouse, crafted by the brand’s design team
This luxurious private house in Tokyo’s Omotesandō neighbourhood offers design and details shaped by Aston Martin, as well as features for the dedicated car collector
-
Tour the brutalist Ginza Sony Park, Tokyo's newest urban hub
Ginza Sony Park opens in all its brutalist glory, the tech giant’s new building that is designed to embrace the public, offering exhibitions and freely accessible space
-
Pace Tokyo is a flowing Sou Fujimoto experience that ‘guides visitors through the space’
Art gallery Pace Tokyo, designed by Sou Fujimoto in a Studio Heatherwick development, opens in the Japanese capital
-
How the Arc’teryx Tokyo Creation Centre is all about craft, openness and cross-pollination
Arc’teryx launches its Tokyo Creation Centre, a hub for craftsmanship designed by Torafu Architects, embodying the brand's ethos
-
Shigeru Ban has perfected the art of enclosure
Taschen’s new XXL monograph, Shigeru Ban. Complete Works 1985 – Today, brings out the sheer diversity of the Japanese architect’s work
-
Space Un celebrates contemporary African art, community and connection in Japan
Space Un, a new art venue by Edna Dumas, dedicated to contemporary African art, opens in Tokyo, Japan