is a small chapel built within the site of Hyatt Regency Osaka. It is used for wedding ceremonies and accommodates 80 people. The structure consists of square steel rings 60cm in diameter, with sides of 25mm, which are interlocked three-dimensionally. One virtual unit is a 3D truncated tetrahedron, and the combined units fill up the space. The three-dimensional layout of the ring corresponds to the array of the circle, inscribed in the 4 regular hexagons within the unit. Steel rings are welded together, forming a foam-like three-dimensional grid which is mainly occupied by voids. This not only supports the roof but is also used to assist the glass exterior as MPG System. Inside the grid, a double-layered woven screen of white organdy is hung.