Exterior, Glass Siding Material, and House Building Type House NA from 2011 has glass walls and a steel structural frame containing a matrix of tiny rectangular rooms and outdoor terraces, each on a separate floor level linked by stairs, ladders, or movable steps. Hemmed in by neighboring homes on three sides and a narrow street in front, the house belongs to a couple clearly at ease with Tokyo’s urban condition.  Photo 9 of 10 in Follow Us to 10 Modern Homes in Tokyo from Architect We Love: Sou Fujimoto