Normandy is a region of northern France. Its varied coastline includes white-chalk cliffs and WWII beachheads, including Omaha Beach, site of the famous D-Day landing. Just off the coast, the rocky island of Mont-Saint-Michel is topped by a soaring Gothic abbey. The city of Rouen, dominated by Cathédrale Notre-Dame de Rouen, is where military leader and Catholic saint Joan of Arc was executed in 1431.