Île-aux-Moines is a commune in the Morbihan department in the region of Brittany in north-western France. It is the largest island in the Gulf of Morbihan. It is one of two island communes of the Gulf, the other being Île-d'Arz.
Wikipedia https://en.wikipedia.org/wiki/Île-aux-Moines
Coordinates 47°35'10.675" N -2°50'55.382" E