The Wall House 2, as it creator named it, is a result of a study on the relationship between interior and exterior spaces by the architect, the late John Hejduk. It’s a four different compartment stacked behind a natural gray wall. A spiral staircase is hidden by the wall for access to this building. Each comparment have different function. The ground floor is the the study, kitchen and dining room. The first floor serve as bedrooms and the last one is a living room. <via>