Mont-Saint-Michel

This unnamed prison is where Mickey is held captive by Pete in the 2004 remake of The Three Musketeers.It is a big castle off the coast of France.There are an unknown measurement of prison cells in the prison including the Dungeon where Mickey is held captive.You must be ten feet tall to survive it,which Mickey is not.The dungeon floods when the tide comes in but Mickey's friends rescue him.