Plus is a modern weekend home that was designed in 2009 by Mount Fuji Architects Studio for a client located in Shizuoka, Japan. In order to navigate the difficult terrain, it was composed of two intersecting rectangular volumes. The upper volume, containing the kitchen and living room, opens out to a terrace overlooking the hillside. The architecture was realized by crossing two rectangular parallelepipeds at very right angles. The lower one contains private rooms and bathroom, and sticks half of the body out to existing narrow level ground. The upper one incorporates salon and kitchen, and lies astride the lower one and the mountain ridge. It almost seems like an off-centered cross pinned carefully on natural terrain. The rooms in the lower structure and terrace on it enjoy broad vista of the sea and blue sky. And gentle shade of natural forest embraces the space in the upper one. Water-polished white marble was chosen as interior finishing material. Exterior is finished with white marble. The surface get smoother as it approaches to the southern/western end till it takes mirror gloss at the ends. The southern end of white cross melts into the blue of sky and sea, and the eastern end to the green of forest.