Lérins

The Isles of Lérins are two small islands near Cannes, France: Sainte Marguerite and Saint Honorat.

The Monastery of Lérins, built in 410, is on the smaller island, Saint Honorat. It was an important focal point of medieval religious life.

The bigger Island Sainte Marguerite held a Fortress where "the man in the iron mask" was held captive for a time.

External link: http://www.abbayedelerins.com/