Creative competition held by Castelló City Hall in 1991 and later developed by the Generalitat Valenciana through Castelló Cultural. This was an ambitious project for the City of Castelló, initially just an auditorium linked the city’s music school, later expanded to include the Convention Centre and finally situated in the new park next to the symbolical Avinguda de la Mare de Déu del Lledó. This is an important cultural centre for the city of Castelló and its Metropolitan area, consisting of a 1,234-seat symphony hall, 370-seat chamber hall, multipurpose congress room with a capacity of 800 pax., meeting rooms, offices, exhibition area and more, all gathered in a single building which stands as a new, monumental landmark in the city. The building is made from a single material –white concrete, which forms both the skeleton and the final form. The structure is thus both a spatial and a physical support. The gently sloping pavement of the square invades the hall of the auditorium via a sequence of spaces which provoke a transition between inside and out below the recital rooms that form the main vestibule, the foyer of the symphony hall and the other related spaces. The building is located in a major 80,000 m2 urban park, also designed and built by the team of architects led by Carlos Ferrater.