A wall is a "complex membrane" that is a firm divider between inside and outside. It is traditionally either solid or window with little gradation between. The Wall House delaminates the wall into four layers, (concrete cave, stacked shelving, milky shell, soft skin.) This is interesting because a traditional wall buries systems that age differently but all the layers are bound together; here the layers are separated and accessible.
According to Chilean architects FAR frohn&rojas; : "From the inside out the layers build upon one another, both materially and geometrically, blurring the boundary between the interior and the exterior and creating, through the specificity of the different materials used (many of which are not common in architectural applications), a series of qualitatively distinct environments."
"The building’s most standout feature, an energy screen typically used in greenhouse construction, constitutes the outermost layer, creating not only a diffused lighting and comfortably climatized zone inside but also, through its folding and sometimes reflective/sometimes-translucent surface, contributes to the diamond-cut appearance of the structure." ::Dezeen via Linton at ::Hugg