Fort Moulins, built during the reign of François 1er, is the oldest and largest fortress on the island of Port Croce. It was redesigned during the reign of Louis XIII, and appeared at the end of the eighteenth century in the form of a parallelepiped building, then was protected From the front with a large wall surrounded by two towers in the back, and in 1793, the English partially destroyed the fort, and it was reconstructed during the reign of the Empire, and its restoration was completed around 1850.