In the summer of 2006 the villa of an entrepreneur was completed in Berlin Grunewald. The heteregene structure of the residential area offerred hardly any urban references. Therefore the architects developed a house that is based on the daily routine of the family and the path of the sun. The villa consists of four interlocking cubes that are grouped on three sides by a "patio". Towards the street side the facade is closed. The living rooms open onto the patio to the southwest and onto the garden. Due to the hillside location, the basement is also used as a living room with direct garden access. Terraces on all floor levels enhance the living spaces and allow a close interaction between interior and exterior space. The northern corner to the garden is emphasized by a roof space. This space, with a fireplace, functions as family library room. The ground floor is designed as an open living room with kitchen and a three-sided fireplace accessible. Thanks to the reinforced concrete structure and clever load distribution, this space could be realized without additional load support. Conceptually, the architects have particularly addressed the transitions from surfaces to lines. By the "folding" of the wall and floor surfaces, they create a spatial continuum. This design concept is continued in the interior spatial design. Large surfaces from plaster and glass underline the spatial continuum and make the building look like a sculpture.