Mont Saint-Michel, France's "Sea Fairy Mountain", no wonder Jay Chou's album cover is set in the background of Mount Saint-Michel, which is known as the "eighth wonder of the world" and is the third largest holy site of Catholicism. Fort Saint-Michel and its bay were declared a World Heritage Site in 1979. The mysterious island of Fort Saint-Michel lies in a conical row of granite. Its bay of San Marlo is a tidal flat, and the tides constantly wash sediments ashore, making Fort Saint-Michel an island that only rises when the tide is high, which is mysterious.