Daiwa House Group Endless Heart Park

The Daiwa House Group Endless Heart Park, presented by the Daiwa House Group (lead member: Daiwa House Industry) in the Urban GX Village, is an outdoor space expressing wind, sun, water and greenery — planned as a park where visitors enjoy light, shadow and the passing of time. Its concept, “Future Living Created by Wind, Sun, Water and Greenery”, starts from founder Nobuo Ishibashi’s words that the 21st century would be “the era of wind, sun and water”.

What to see

According to plans released on September 15, 2026, the park centers on 35 “parasols”.

• Glass parasols holding water: each parasol is 2.3m in diameter and made of two 12mm-thick circular glass sheets bonded with a colored interlayer. Water on top ripples and projects colored light onto the ground. The interlayer blocks 99% of UV light, and the circulating water film absorbs solar heat, creating a softly lit place to linger below. A multilayer transmissive mirror film changes appearance with the angle of light while letting through the natural light plants need.
• Water and planters: falling water and fountains express the cycle of water. Stainless-steel planters with plants of various heights and sizes are scattered around, reflecting plants, sky and people.
• A landscape that changes: light and shadow shift with the time of day, weather and wind, and lighting creates a different space at night.
• No set route: visitors walk freely and make their own discoveries.
• Electricity from food waste: the cooling equipment introduced against summer heat is planned to run entirely on renewable power. Food waste from the staff cafeteria at Daiwa House’s Tochigi Ninomiya plant (about 25kg a day) is turned into biogas, then into bio-methanol using a photo-oxidation technique developed with Professor Kei Ohkubo of Osaka University, and transported to the venue to generate power. Bio-methanol from Mitsubishi Gas Chemical is also used, cutting CO2 emissions by about 2.7 tons over the Expo compared with fossil-fuel power. Daiwa House says this end-to-end process is a first in Japan (based on its own research), and its special site says part of the generation system will be on display.
• Washi workshop: the credits list Kawahara Takakuni (川原隆邦) of Kawahara Seisakusho as supervisor of a washi (Japanese paper) workshop. Details have not been announced (as of October 2026).

Building and design

• Team: producer (planning) Ou Sugiyama (杉山央) of Shinryoiki (新領域), who was also introduced by the Expo Association in 2024 as exhibition director of the Theme Pavilion; exhibition and direction by Naoki Ito (PARTY); content development by PARTY; architecture designed and built by Fujita and Tom Architects; landscape designed and built by Daiwa Lease and the design office of Tomura Eiko (戸村英子設計事務所).
• Scale and schedule: site area about 1,237 m². Construction started on June 1, 2026, with completion planned for the end of January 2027.
• Testing the design: after a safety ceremony on May 27, 2026, the team checked mock-ups on site and used a full-scale VR model to confirm how the parasols look and how the space feels.
• The name: “Endless Heart” is the Daiwa House Group symbol introduced for the company’s 50th anniversary in 2005.

About the exhibitor

The Daiwa House Group links the exhibit to its purpose of turning the joy of living into the landscapes of the future, which it sees as matching the Expo theme, “Scenery of the Future for Happiness”. The bio-methanol demonstration is part of its environmental vision “Challenge ZERO 2055”, which aims for zero environmental impact by 2055.

Announcements so far

• October 1, 2024: Daiwa House Industry was selected as a Village exhibitor.
• March 19, 2026: the facility name and concept were announced and the special site opened; the Expo Association also published the exhibit overview.
• May 27, 2026: safety ceremony at Seya Suwa Shrine in Seya Ward, Yokohama; construction started on June 1.
• September 15, 2026: details of the parasols and the production team were released.
• September 24, 2026: the food-waste bio-methanol power demonstration (March 19 – September 26, 2027) was announced.

Reactions on social media

PARTY, which handles exhibition direction and content, introduced the facility and its credits on X on September 15. General discussion is still limited, but posts on X highlight the 35 water-topped glass parasols and the plan to power the cooling equipment with fuel made from food waste (as of October 2026).

Before you go

• Location: Urban GX Village; see the venue map on Daiwa House’s special site.
• Outdoors: the park is planned as an outdoor space, with parasols softening the sun, cooling equipment against the heat and lighting effects at night.
• Reservations: whether it will be covered by the same-day viewing reservation system has not been announced (as of October 2026).
• Accessibility and children’s information: not yet announced.

Sources (all checked 2026-10-04):

• Expo Association: Village Exhibitions
• Daiwa House Group: GREEN×EXPO 2027 special site (English)
• Daiwa House Industry: special site (Japanese)
• Daiwa House Industry topics: six months to go (2026-09-15, Japanese)
• Daiwa House Industry topics: under 250 days to go (2026-07-13, Japanese)
• Daiwa House Industry newsletter: food-waste bio-methanol power demonstration (2026-09-24, Japanese)
• Daiwa House Industry newsletter: facility name and concept (2026-03-19, Japanese)
• Daiwa House Industry: Village exhibitor selection (2024-10-01, Japanese)
• Daiwa House Industry: the Endless Heart symbol (Japanese)
• Expo Association: one-year-to-go materials (2026-03-19, Japanese)
• Expo Association press release: first exhibitors announced (2024-10-01, Japanese; includes Ou Sugiyama’s role)
• Expo Association: “GREEN×EXPO 2027 progress” (published by MAFF, June 2025; Village layout map, Japanese)

Note: Exhibit details and highlights will be updated as official announcements are made.