Dating from the 10th century, the Gressière castle (Fr. Château de la Gressière) overlooks the bay of Bourgneuf in La Bernerie-en-Retz, Loire-Atlantique department of France, Pays de la Loire, Atlantic Ocean. It’s a popular stop on the Atlantic resorts of France. Strategic location at the time, it had an imposing dungeon. In the middle of the 19th century, the Gressière ...