Île d'Oléron - Island of Oleron is an island off the Atlantic coast of France on the southern side of the Pertuis d'Antioche strait. It is the second largest French island after Corsica (not counting French overseas possessions).
On this card there's also Fort Boyard and Chassiron Lighthouse. "After the English briefly took possession of the Ile d'Aix in 1757, and in order to protect newly armed naval vessels coming out of the Grand Arsenal, Napoleon Bonaparte ordered the construction of Fort Boyard in 1804.
Constructed upon a sand bank, which needless to say created many difficulties, the fort was completed in 1857, by which time modern weaponry had rendered it obsolete.
The fort has finally found its place as the home of the popular TV series which carries its name, and which isbroadcast in several different countries.
Built between 1834 and 1836, the foundations of the lighthouse at Chassiron are over three metres deep and eighteen in diameter. The stone comes from the Crazannes quarries, which also provided the material for the cathedral of Cologne.The tower is 46 metres high and the lights may be seen up to 52 km away in clear conditions. 224 steps lead to the light room from which a magical view is afforded over the Bout du Monde point (End of the World!)" - in: http://www.camping-oleron.com/anglais/06_visites_pays/chassiron.php