Architecture, Building and Structure Design River Sea Villa by Junichiro Kawazoe River Sea is a villa located on Awaji Island in Hyogo Prefecture, Japan. The site lies near the mouth of a river, and the axis of the plan runs from north to south toward the water. The building is divided into three parts: an entrance building, a guest building and a main building. Two courtyards separate the three parts, and a path connects them. Along the path, the boundary between inside and outside becomes soft. The walls are covered with border tiles made from local Awaji roof tiles. The single storey limits the effect on the surroundings.