St Michael's Mount

St Michael's Mount is a tidal island in Mount's Bay, Cornwall, England, United Kingdom. The island is a civil parish and is linked to the town of Marazion by a causeway of granite setts, passable between mid-tide and low water. It is managed by the National Trust, and the castle and chapel have been the home of the St Aubyn family since approximately 1650.

Historically, St Michael's Mount was a Cornish counterpart of Mont-Saint-Michel in Normandy, France, with which it shares the same tidal island characteristics and a similar conical shape, though Mont-Saint-Michel is much taller.St Michael's Mount is one of 43 unbridged tidal islands that one can walk to from mainland Britain. Part of the island was designated as a Site of Special Scientific Interest in 1995 for its geology.