Château l'Isle Marie near Picauville in the Cotentin peninsula, Normandy, was founded in 11th Century. It is said to be one of the oldest viking castles in France.
Set in a sprawling park with old walls, mews, its own chapel, huge underground chamber and, owners say, a family ghost, it is now a B&B welcoming individual guests and hosting parties. A true gem!
See more on Tripadvisor.
