The coasts of the North Sea and the Atlantic are home to numerous places that have had a decisive influence on the history, art and culture of Europe. For example, the breathtaking chalk cliffs of Étretat, the beaches of Normandy and the Gothic cathedrals. The sea is mighty. A tidal difference of up to 14 meters (46 feet), as in the bay of Mont St. Michel, can otherwise only be found in Canada.