This building, located between the elevated Metropolitan Expressway and the National Stadium subway station, was designed to be a public space with a cultural aspect that will be used by a variety of visitors from Japan and abroad on the occasion of the Olympics, as well as to serve as an infrastructure for the city in the future. Suppose Design Office started the project by reconsidering the impression, function and usage of the conventional "public toilet" from the premise.

In the absence of a planar expanse, they secured a large air space in the height direction, concentrated two pillars, toilet booths, and hand-washing facilities in the center, and raised the four exterior walls 500mm above the ground.

The interior walls of the 7.5 m high cube are finished with a texture of washed concrete, and the soft light coming through the slits in the roof draws the light into the interior in an impressive way. It is a space where one can appreciate the "changes of seasons and time woven by nature." 

The specifications that contradict the conventional perception of public toilets, such as the Akoya wood paneling, the hotel-like appearance of the brass signage, and the washbasin placed in the center so that men and women can share, were planned with an emphasis on rationality and diversity. 

By creating a space that is flat, easy to use, and of high quality for everyone, they hope to change the consciousness of the users, and that they themselves will participate in maintaining a comfortable environment, leading to a healthy cycle.