France, La Rochelle, 9 October 2009: Fort Boyard is a fort located between the Île-d'Aix and the Île d'Oléron in the Pertuis d'Antioche straits, on the west coast of France. It is 61 metres long, 31 metres wide, and its walls are 20 metres high.<br />
It is currently used as a set for a television game show named Fort Boyard. Photo by Peter Horrell / http://peterhorrell.com.