The opening of the European borders has caused a real estate boom in Spain. The value has been increased enormously, thus leading to an enormous production of housing. This operation is facilitated in Madrid by a giant new neighborhood that surrounds the old city. A series of new cities that are mainly constructed of blocks that surround a private patio, with a more or less introverted architecture with small windows, somehow opposes the extraverted Spanish culture.In PAU de Sanchinarro, one of these new cities, situated on the northeast edge of Madrid, two plots are given to develop a possible escape from the uniformity and claustrophobia of this sea of six-story-high blocks. Next to the Mirador housing, a second escape has been created by opening a given block on all levels. Blocks of eight houses are seen as separate prefabricated figures. They are positioned in a checkerboard pattern next to and on top of each other in such a way that they leave openings for communal gardens in between. A perforated block appears, in which shadow and ventilation compensate for the strong climatic constraints. It creates views from the street through the building. It creates views from the houses to the surrounding area. It defends against the claustrophobic conditions of the existing developments.