Long thought to be a Carolingian oppidum, recent research has shown that it is in fact a 12th-century fortification. It stands in the middle of the forest, on the edge of the Grand Étang des Deffays (better known today as Coco Plage), between the former banal mills of the barony of Sillé and the road that linked the town to Mont-Saint-Jean.
This fortress was first mentioned in 1409. It was already a ruin. Abandoned at an early date, the castle was apparently built in a short space of time, with an original layout that makes it unique in the military architecture of the Maine region.
Information: It is only possible to walk around the outside of the castle. For security reasons, it is forbidden to enter the castle grounds.
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