The block building unifies two previously separated sectors, and has four floors, sitting on top of two other ones for underground parking. The ground-floor was designed for commerce, the first floor for one-storey apartments, and the second and third floors for two-storey apartments, with access by a gallery. The gallery, a meeting place, has been dimensioned as an airway, and is mainly located on the North side of the building. It crosses the street separating the two units, and provides the constructed masses with the formal and operating unity required.At ground-floor level, the central apexes have been left empty, thereby visually and functionally uniting the two common areas.This design was an opportunity to realize a city by means of architecture, in what is most relevant in urban living: public spaces. Between family architecture and public facilities, a series of spaces were conceived, ranging from the public to the semi-private, from the open to the confined.