An identical house (4x4 house II) was commissioned to Ando Tadao by the neighbor of the adjacent plot (built in 2004), but the two twin houses were built using different materials. The 4x4 has a staircase and is made of concrete, and its copy has an elevator and is made of wood (laminated pine from Oregon and Paulownia wood). Using different materials was a suggestion made by the architect. The architect has often worked on twin and/or dualistic structures (and he has a twin brother). This brutalist modernist house on the beach is close to surrealistic.
