Castello Alfonsino

It is called Castel Rosso, Castello Di Mare, or Forte a Mare. This building was built on the island of Sant'Andrea and is considered a complex fortified work. The construction of the castle began in 1445, when Alfonso I of Aragon decided to protect the port. From 1558 to 1604, many parts of the island were enclosed by bulwarks representing a new defense system. For a certain period of time it was also used as a headlight seat.