Mont Saint-Michel's Secret

Mont Saint-Michel, located in the north of France, is a vast castle town that only briefly connects to the mainland during low tide. Due to this, it remained unconquered by the English throughout the Hundred Years War. Following the French Revolution, it became a notorious prison for political prisoners, with the surrounding area renowned for its treacherous quicksand, which often ensnared unwary visitors. As a result, it was dubbed the "Bastille of the Sea."