The Mont-Saint-Michel Abbey is an abbey located within the city and island of Mont-Saint-Michel in Normandy, in the department of Manche. The abbey is an essential part of the structural composition of the town the feudal society constructed. On top, God, the abbey, and monastery; below this, the Great halls, then stores and housing, and at the bottom, fishermen's and farmers' housing. The abbey has been protected as a French monument historique since 1862.