Mont de Saint_Michel is located on a small rocky island, in a estuary of the river Couesno, in the region of Normandy, a world heritage site worth seeing since 1979, when the tide of the estuary rises is an island, when low is a zone of Marshes. I built an abbey in the 10th century, walled to protect against the Viking raids.
Ancient Benedictine Abbey, is a superconstruction of Romanesque and Gothic
I went with the family to visit it we did not have parking problems two meters from the island you can park and although the tide rises they have made a walk in suspension bridge plan to avoid that with the rise of the tide we would stay there, always full of Tourists, so I advise you to take it easy, and go and enjoy.
source:http://es.normandie-tourisme.fr
http://sites.psu.edu