The Château d'If (close up).The Chateau D’If, constructed on a tiny island in the Bay of Marseilles in France, was erected as part of the island’s defenses. It was constructed by Francois I, its purpose initially for military use, however it was never put to the test.
During the 18th century, a military engineer named Vauban examined Chateau D’If stating it was unskillfully assembled. "The fortifications look like the rock, they are fully rendered, but very roughly and carelessly, with many imperfections."...
The TravelSphere: Chateau D’If Prison: Famed Home of the Count of Monte Cristo