Yu-un House is a project for a private gallery, equipped with a guesthouse and tea ceremony room, located in a quiet residential district in Tokyo.
The building is designed by Tadao Ando using a box-within-a-box concept. The outer layer is a two-story high glass box, which is 20 meters squared in plan and adapted to the shape of the site. Inside, a concrete box is divided by a grid into 25 equal parts. A single diagonal intersects the grid to form a central courtyard.