Fort de La Prée, Military fortress in La Flotte, France

Fort de La Prée is a four-bastioned star fort on the north coast of Île de Ré, between Rivedoux-Plage and La Flotte. Two bastions face the sea, joined by curved curtain walls, with an outer enclosure and covered way; a small harbour opens to the east. Its long seaward wall of rough grey and brown stone has a flat top, and the central gate projects slightly, with a wide arch below and a rectangular upper section between darker masonry strips.

Toiras, governor of Île de Ré after defeating the Huguenot forces of the Duke of Soubise in 1625, had engineers Le Camus and Pierre de Conty d'Argencour build the fort in 1626 to protect an anchorage on the island's eastern side. In 1627 the Duke of Buckingham ignored it during his siege of Saint-Martin-de-Ré; Toiras landed troops there and forced the English to withdraw. Vauban had the outworks razed in 1684, keeping the four-bastioned star, the port and the sea-front rampart.

The fort's name comes from the nearby salt meadows, called prées. Since 1981 it has been restored by inmates of the French prison service, which owns it, and later by volunteer heritage work camps up to 2011. Today the site is rented out for festivities and events, and summer activities are held there.

Visits run from April to the end of September and during the Toussaint holidays, with activities in summer; the site can also be booked for private events. The fort lies between Rivedoux-Plage and La Flotte on the north coast, and its small harbour opens to the east.

The fort's ramparts contain concrete blockhouses built by German forces during World War II that remain visible today. These later additions show how the structure evolved to meet changing military needs across more than 300 years.