Tregastel Castle – Chateau de Costaeres
The Cotes-d’Armor coastline around Perros-Guirec is rugged and made out of solid pink granite. This rocky surface made for great building materials for the construction of castles and fortresses. One of these castles can be found on an island a few meters off the coast; the Chateau de Costaeres.
The castle is located on the island of Costaeres and was built in 1896, by a Polish mathematician and engineer.
The castle is private property and no visits are allowed, but you will see the castle and island in many postcards of the area. During WWII, the castle was taken over by the Germans who wrecked it.
But walking along the coastline of that area, you will enjoy many sides to this castle.