Fort Boyard is a fortification located between the Île-d'Aix and the Île d'Oléron in the Pertuis d'Antioche straits, in western France. It was built between 1801 and 1857 as a military fortification, but it never saw military action. Instead, it was used as a prison, a storage place for arms, and a hospital for sailors. Today, it is a popular tourist destination, best known for its appearance in the eponymous French television game show, "Fort Boyard." The show features contestants who must complete various physical and mental challenges in order to win prizes. The fort's unique design and its history make it a popular site for visitors, who can take guided tours of the fort, enjoy scenic views from the battlements, and learn about its history.