This passive solar house overlooking the Sea of Japan is built not just for a couple and their twin children, but for all the neighborhood children. The exterior is actually a 2-story staircase and lounge that can be used as a place for children to play. The interior consists of radiant floor heating, a wood stove, strategically placed windows and air vents, bookcases, cubbies, and open rooms that are illuminated by the constantly changing light that filters through the overhead windows.

Core 77 via Inhabitat