Wall house is a project designed by CTA | Creative Architects. According to recently published scientific researches, indoor air quality is worse than outdoor air quality. Therefore, most of our discussions with the house owner tended to the idea of a house which is able to ‘breathe’ 24/7 by itself. Through the process of working, the Wall house is shaped gradually: A house is made up of eight separate spaces surrounded by ordinary walls. These eight blocks are interspersed and intersect at a common space, which is formed from ‘breathing walls’. Photography by Hiroyuki Oki.