A magical island topped by a gravity-defying medieval monastery, the Mont-Saint-Michel counts among France’s most stunning sights. For centuries one of Europe’s major pilgrimage destinations, this holy island is now a UNESCO World Heritage Site, as is its breathtaking bay.
Now a rocky tidal island, the Mont occupied dry land in prehistoric times. As sea levels rose, erosion reshaped the coastal landscape, and several outcrops of granite emerged in the bay, having resisted the wear and tear of the ocean better than the surrounding rocks.