Bank of Yokohama GREEN WALL

The Bank of Yokohama GREEN WALL is a living wall that will be installed directly facing the entrance gate with sponsorship from The Bank of Yokohama. One of the Expo Association’s sponsor partner contents, it is described by the association as the “face” of GREEN×EXPO 2027, welcoming visitors at the gate that every visitor sees first. Its design concept is “Kaleidoscope.”

Highlights and exhibits

• A wall that changes over time: The colors, shapes, and expressions of the plants change with time, expressing how diverse characters and values mix to create a larger world together (association, June 12, 2026). The Nikkei reports that seasonal plants will be planted so the wall’s look changes through the seasons, and the Kanagawa Shimbun says it will express the diverse nature of the city.
• Planting details not yet announced: The plant species, their number, and the wall’s structure have not been announced (as of October 2026).

The bank’s sponsorship also covers night-time features:

• Projection mapping on a former ammunition depot: Images and sound by official creator Mika Ninagawa with EiM will be projected onto a former earth-covered ammunition depot on the site to light up GREEN×EXPO 2027 at night (association, September 15, 2026). The association calls it a structure that carries the area’s history; the Kanagawa Shimbun reports that it is a former Imperial Japanese Navy facility. Dates and times have not been announced.
• Main Garden lighting: In June the association said lighting up the Main Garden was being considered. The Kanagawa Shimbun reports a “night garden” that brings out the depth and three-dimensional forms of the plants.

Building and design

Up to 4 m high and about 40 m long in total (association, June 12, 2026). The published rendering shows a long wall covered in greenery, dotted with flowering plants and fitted with several white, picture-frame-like openings. The designer has not been announced (as of October 2026).

About the exhibitor

The Bank of Yokohama is a Platinum Partner (project sponsorship of ¥500 million or more) in the “attraction creation” and “momentum-building” projects. On June 27, 2024, it signed an agreement with the City of Yokohama on realizing a new green society; according to the city, it was the first such agreement with a private company covering participation in and promotion of GREEN×EXPO 2027. Under the agreement, from July to November 2024 the bank donated ¥39 to the city for each passbook a customer switched to a paperless web account, with the money going to GREEN×EXPO 2027 projects (16,152 passbooks, ¥629,928 as of November 30, 2024).

Timeline

• Jun 27, 2024: Partnership agreement signed with the City of Yokohama (City of Yokohama)
• Oct 29, 2025: The association named the Bank of Yokohama a Platinum Partner of the “attraction creation” project (association)
• Jun 12, 2026: First rendering of the GREEN WALL released; Main Garden lighting and projection mapping announced as under consideration (association)
• Jun 18–19, 2026: The Nikkei and the Kanagawa Shimbun reported the plans for the wall and night-time features (Nikkei / Kanagawa Shimbun)
• Sep 15, 2026: The association announced the projection mapping by Mika Ninagawa with EiM on the former ammunition depot, sponsored by the bank (association)

Social media

There is little discussion of the GREEN WALL yet (as of October 2026).

Before you go

• Location: Directly facing the entrance gate, which the association describes as the first thing every visitor sees. A detailed layout of the gate area has not been published (as of October 2026).
• Reservations: No information on reservations has been released (as of October 2026).
• Night-time features: Times and dates for the projection mapping and details of the Main Garden lighting have not been announced.

Sources

• Expo Association: sponsor partner contents (Japanese) (checked 2026-10-04)
• Expo Association, Jun 12, 2026: first look at the Bank of Yokohama GREEN WALL (Japanese) (checked 2026-10-04)
• Expo Association, Sep 15, 2026: official creator Mika Ninagawa’s projects (Japanese) (checked 2026-10-04)
• Expo Association, Oct 29, 2025: 500 days to go, major project sponsors (PR TIMES, Japanese) (checked 2026-10-04)
• Expo Association: sponsorship (Japanese) (checked 2026-10-04)
• Nikkei, Jun 18, 2026 (Japanese) (checked 2026-10-04)
• Kanagawa Shimbun (Kanaloco), Jun 19, 2026 (Japanese) (checked 2026-10-04)
• City of Yokohama press release, Jun 27, 2024 (Japanese) (checked 2026-10-04)
• Bank of Yokohama: web account donation program (Japanese) (checked 2026-10-04)

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