It is set on the Monte Benacantil hill, a location of great strategic value. It is so-called as it was captured from the Moors by prince Alfonso of Castile on the feast day of Santa Bárbara. The castle was remodelled in the times of Philip II. It suffered numerous bombardments during the 17th, 18th and 19th centuries. It opened to the public in 1963 and that same year, the two lifts that run inside the hill were inaugurated. The castle is divided into three areas: La Torreta, where you can see the old keep; an intermediate section corresponding to the most important rooms, including the outstanding hall of Philip II, the bailey, etc., and the lower area, dating from the 18th century, home to the “Revellín del Bon Repós” rampart.