This building is a restroom building built in the roadside station of Yawatahama City, Ehime Prefecture. Yawatahama is a town enclosed by surrounding mountains. There are also terraced fields of mandarin oranges, which are the special product of the city.
This scenery can be seen from the roadside station as well. The roadside station is designed so that people who have stopped by can enjoy the pleasant scenery and a place to rest.
The restroom is covered with a ceiling in the shape of a mandarin orange tree, and the courtyard is arranged at the center of the building. The ceiling cuts out the scenery of terraced fields outside of the building, and the courtyard brings the wind and light into the building.
The ceiling of the structure has bright, effective lighting at night, which illuminates the surroundings. This lighting aims to effect crime prevention at nighttime as the restroom is open 24 hours.