St Michael's Mount

St Michael's Mount Cornish: Karrek Loos yn Koos
St Michael's Mount
St Michael's Mount Location within Cornwall
Area	0.09 sq mi (0.23 km2)
OS grid reference	SW514298
• London	290 miles (467 km)
Civil parish	St Michael's Mount
Unitary authority	Cornwall
Ceremonial county	Cornwall
Region	South West
Country	England
Sovereign state	United Kingdom
Post town	MARAZION
Postcode district	TR17
Dialling code	01736
Police	Devon and Cornwall
Fire	Cornwall
Ambulance	South Western
UK Parliament	St Ives
Website	www.stmichaelsmount.co.uk
Listed Building – Grade I
Designated	9 October 1987
Reference no.	1143795
National Register of Historic Parks and Gardens
Designated	11 June 1987
Reference no.	1000654
List of places UK England Cornwall 50°06′58″N 5°28′38″W / 50.1160°N 5.4772°W / 50.1160; -5.4772

St Michael's Mount (Cornish: Karrek Loos yn Koos,^[1] meaning "hoar rock in woodland")^[2] 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 (as is the beach) 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 around 1650.

Historically, St Michael's Mount was an English counterpart of Mont-Saint-Michel in Normandy, France, which is also a tidal island, and has a similar conical shape, though Mont-Saint-Michel is much taller.^[3]

St Michael's Mount is one of 43 unbridged tidal islands accessible by foot from mainland Britain. Part of the island was designated as a Site of Special Scientific Interest in 1995 for its geology. Sea height can vary by up to around 5 metres (16 ft) between low and high tide.^[4]