5Mont Saint-Michel, France
Mont Saint-Michel is a striking fortress and abbey rising dramatically from a tidal island off the coast of Normandy, France. Dating back to the 8th century, this unique medieval stronghold is surrounded by shifting tides and is accessible only at low tide. The abbey and its towering spires dominate the island’s skyline, giving Mont Saint-Michel an ethereal, otherworldly charm. The castle’s isolation, combined with its breathtaking beauty, makes it one of the most visited landmarks in France.