Concrete Tokyo toilet by Wonderwall references primitive Japanese huts

A maze of board-marked concrete walls encloses this public toilet in Tokyo, which interior design studio Wonderwall created for the Tokyo Toilet project and modelled on prehistoric Japanese architecture.
Located in Ebisu Park in the capital's Shibuya district, the toilet block is intended to resemble "primitive and simple" object in the park, rather than standing out as a building.
It is dubbed by Wonderwall as the Modern Kawaya, referencing primitive kawaya huts that were used as toilets in the