Masato Sekiya has completed a Mono Struct house in Kasiwara, Japan. It is constructed of beams of local Japanese cypress that are fastened by metal bolts. All the posts are made of 12x12 cm pieces that sandwich beams at right angles and are stabilized by the metal bolts. This simple system allows floor levels to be adjusted freely, and the upper storey is divided into four different levels. This also makes delineation by walls unnecessary, and light and air flow freely though the space. On one side of the house, some of the beams extend out to become visible on the exterior, creating unique forms.