Built by the Iberians atop a rock, the fortress was particularly important in the Muslim period. Its walls are two and a half kilometres long and have 14 towers and six gateways, among which the Gothic gateway of San Pedro stands out. It consists of several parts, among which the Governor's Palace, the prisons, the parade ground or Celoquia tower are worth mentioning. The castle was a prison during the Middle Ages. It was declared an Historic-Artistic Monument by Decree on 3 June 1931.