Mont-Saint-Michel is a unique place in France located between Normandy and Brittany. Based on a rocky islet and surrounded by a superb bay, it is witness to the highest tides in continental Europe.
As soon as the tidal coefficient crosses the threshold of 110, the Mount becomes an island for a few hours. The most intense spring tides generally occur between 36 and 48 hours after the new or full moons. To witness this spectacle of nature, certain days of the year are more suitable than others.