The Campo del Moro offers the best view of the whole of this impressive building, a block of Guadarrama granite and white stone, each side measuring 140m , built by the Bourbons. It was the official residence of the Royal Family until 1931. Today, it is part of the national heritage and you can visit thirty of its 2 000 rooms, among them the beautiful Throne Room, the sumptuous Gasparini Room and the marvellous Porcelain Room.