The Hill of Saint Elia is one of the seven hills of Cagliari and it was frequented since ancient times, due to its strategic position, and numerous archaeological finds have been found in it. Rich in limestone rocks, it overlooks the Gulf of Angels dividing it into two arches that converge on it. It houses several towers, built and used to spot any enemy incursions. Among the defensive garrisons the lighthouse and the Fort of Saint Ignazio stand out.