 This area of 133 hectares is one of the few inscribed contemporary sites in Europe.The architecture of the area is characterized by the use of precast concrete using a system of a modular frame of 6.24 metres and straight lines.Another notable architectural work of the central city is that of the "House of Culture" built in 1982 by the Brazilian architect Oscar Niemeyer and nicknamed "the Volcano" because of the shape of the building.