Mont Saint-Michel is a rocky tidal island which holds a monastery. The first monastic establishment was created here in the 8th century. The mount gained strategic significance in 933 when William "Long Sword", William I, Duke of Normandy, annexed the Cotentin Peninsula, definitively placing the mount in Normandy. It is depicted in the Bayeux Tapestry, which commemorates the 1066 Norman conquest of England. Ducal patronage financed the spectacular Norman architecture of the abbey in subsequent