The Citadel of Ajaccio is a fortress located on top of a hill overlooking the port of Ajaccio. The fortress was built in the 16th century by the Spanish to protect the city from enemy invasions.The fortress consists of a series of ramparts, towers, and walls, and is surrounded by a moat. Inside the fortress is the Chapel of St. James, a Baroque-style church built in the 17th century.In addition to historical wonders, the Citadel of Ajaccio holds several legends and hidden features. One legend has it that the fortress was built on the remains of an ancient Roman temple dedicated to the goddess Diana. It is also said that there is a secret tunnel connecting the fortress to the sea, used by the Spanish during their military operations.The fortress also offers spectacular views of the city of Ajaccio and the sea. From the top of the hill, there is a panoramic view of Ajaccio Bay and the surrounding mountains.The Citadel of Ajaccio is a must-see for those visiting the city, and is a place of great historical and cultural importance to Corsica. In addition, the fortress has been used as a location for several films and television programs, including the television series "Il commissario Montalbano."