The core of the building consists of two boxes on columns. The latter extend the forest environment, understood as a sea of tree trunks, into the interior. A continuity of the inside and outside is created. The space is thus understood as an open, free multifunctional place. It does not offer defined functions, much more the undefined is its function. The second floor replaces the permeable glass membrane with concrete walls. A first feeling of security arises. After climbing up the stairs, one finds a kitchen area. The second box slides into the existing concrete structure. It serves to accommodate the most private needs. To give them another skin, the place consists of a self-contained wooden cube. This reinforces the protective walls and increases the feeling of security. Here are located important functions of the retreat such as the sanitary facilities, a reading room including a small library and a place to sleep.

Looking at the house energetically, it follows the logic of increasing intimacy of spaces. The only place that is fully heatable, with electricity and running water is the wooden cube. The activities close to the body, such as sleeping and washing, are located here. The kitchen, a place between retreat and total opening, forms a transition zone. Here are all the necessary water and electricity for cooking. The first floor, as an open free, almost outdoor space, lacks all modern necessities. This allows the construction work without wiring. An archaic architecture, reduced to the essentials, is thus possible.