Wednesday, 10th August 2005 by Alex Turnbull
The Château d’If is on the small island of If, in the Bay of Marseille, France. It was completed in 1531, and was originally intended as a defence against attacks from the sea, however it never had to fight off an actual attack, and later became one of France’s most notorious prisons. The Château became internationally famous in the 19th century when Alexander Dumas used it as a setting in his classic novel The Count of Monte Cristo.
In our thumbnail you can see the small square building itself, and also the shadows of its three towers (Wikipedia page).