A first castle was built by
Hiero I of Syracuse in 474 BC. At the same time, two towers were built to control enemy fleets' movements. The rock was then occupied by
Parthenopeans, the ancient inhabitants of
Naples. In 326 BC the fortress was captured by Romans, and then again by the Parthenopeans. In 1441
Alfonso V of Aragon connected the rock to the island with a stone bridge in place of the prior wood bridge, and fortified the walls in order to defend the inhabitants against the raids of pirates. Around 1700, about 2000 families lived on the islet, including a
Poor Clares convent, an abbey of
Basilian monks (of the
Greek Orthodox Church), the bishop and the seminar, the prince with a military garrison. There were also 13 churches. In 1809, the British troops laid siege to the island, then under French command, and shelled it to almost complete destruction. In 1912, the castle was sold to a private owner. Today the castle is the most visited monument of the island. ==Location and description==