The Fort Boyard is a key element of the Naval Dockyard of Rochefort which extends all along the estuary of the Charente.
If the construction of this fortification on the "Longe of Boyard" was considered as early as the seventeenth century, the project only really started in the course of the 19th century. Built with the aim of protecting the harbor, the mouth of the Charente and especially the large dockayrd of Rochefort from the assaults of the English navy, the Fort was transformed into a prison a few years after its completion.
The Fort has been classified as an historic monument since 1950.
The Fort is 68 metres long on 31 metres large, for a total surface area of 2689 square metres. The surrounding walls peak at 20 metres. The fort is also built on a sandbak called "Longe of Boyard" which gave its name to the Fort itself.
Since 1990, Fort Boyard has been the location of a television game of the same name.
Located between the islands of Aix and Oléron, the Fort Boyard is part of the territory of Rochefort-Océan. Many departures of cruises are possible to bypass the Fort (from Port-des-Barques, Fouras-les-Bains or the Island of Aix).