Fort Langostier, a large pyramidal tower with a square base, built between 1633 and 1637, is included in the Supplementary Inventory of Historic Antiquities, with two vaulted levels and an upper terrace designed as an artillery battery, the interior of which was redeveloped during the Empire and includes a cistern and storeroom powder, on the first floor there are accommodations and a spiral staircase leading to the balcony.