St Michael's Mount is a small rocky tidal island in Mounts Bay, Cornwall. At low tide it is linked to Marazion by a man-made causeway of granite setts. The causeway is well maintained and you could walk across in ordinary shoes, as it dries out completely at low tide. However I wouldn't recommend stiletto heels! At high tide you can catch a boat to the island in the summer months.
St Michael's Mount may have been the ancient tin trading centre, known to the Ancient Greeks as Ictis. According to legend, in 495 AD some local fishermen saw a vision of St Michael the Archangel on top of the island. He warned them to keep away from the island's treacherous rocks. This event may have led to the building of a small chapel on the island dedicated to St Michael.
St Michael's Mount was given to the Benedictine abbey at Mont St Michel in France in 1044 by Edward the Confessor. Work on the church and priory buildings was begun in 1135 by Abbot Bernard. There were only ever about 8 resident monks. The church was a pilgrimage destination during the Middle Ages. The church has been rebuilt many times since then and most of the current church dates from no earlier than the 14th century. The Priory on St Michael's Mount was closed in 1425.
The oldest parts of the castle, which date from the 12th century, were constructed from moor stone. Moor stone is a porous granite and the stones were collected up from local beaches and moorland. Later parts of the castle were built with granite quarried from Castle-an-Dinas. Extensions added in the Victorian period were clad with Lamorna granite.
St Michael's Mount changed hands numerous times during the 15th to mid 17th centuries. In 1497 the island was briefly occupied by Perkin Warbeck, a pretender to the English throne. In 1549 during the Prayer Book Rebellion, some members of the gentry sought refuge in the castle on St Michael's Mount. They were besieged by the rebels and forced to surrender.
The island was bought from the Bassett family by Colonel John St Aubyn in 1659. He had served in the parliamentary army during the English Civil War and had been the last governor of the military garrison on the island. The castle and old priory buildings were converted into a home. During the Victorian period the castle was altered and extended to designs drawn up by Piers St Aubyn. The east wing, a new kitchen and an additional attic floor above the west side were added. In 1927 the Steward's Flat and adjacent staff areas were built.
Colonel St Aubyn's descendants owned St Michael's Mount until 1954 when it was given to the National Trust. Members of the St Aubyn family still live in the castle. The island is jointly managed by the National Trust and the St Aubyn family.
There is a four acre terraced garden on the south side of the island beneath the castle. The three-tiered walled garden was constructed in the 1780s. It was designed by the 4 Miss St Aubyns who lived in the castle at that time. The east and west terraces were built in the 1880s. The garden was designed to be viewed from the castle battlements above it, as well as from within. It is exposed to storms and salt-laden winds, but the granite bedrock absorbs the heat from the sun and creates a micro-climate, which enables tender plants and succulents to be grown.
In 2009 one of the resident gardeners found a Bronze Age hoard on the island.
It is free to visit the island at low tide during the winter. If you want to visit during the Easter holidays or between 1st May and 12th September, you will need to purchase a ticket to the castle and/or the gardens (free to National Trust members). There is an extra charge for the boat if the causeway is not accessible and you also have to pay for the car park in Marazion. You cannot visit anywhere on the island without a ticket during the summer season. The island has toilets, 2 cafés and 2 gift/craft shops.
Dairy
The design of the dairy was based on the kitchen at Glastonbury Abbey. It was designed by Piers St Aubyn and built in the late Victorian period, when a small herd of Jersey cows was kept on the island. The herd was disbanded in 1909. Piers St Aubyn also designed many of the houses in the village.
Steps up to the Castle
Pet Cemetery
This is located on the way up to the Castle. It was in use by the St Aubyn family from 1891-1923
Giant's Heart
This is set into the cobbles on the way up to the castle
Giant's Well
This is a fresh water spring and was the main source of fresh water for the island until it was connected to mains water in 1936.
Gun Batteries
These were installed in the late 18th century and were mainly used for ceremonial purposes.
Castle
Castle
Blue Drawing Room in the Castle
This room was the Lady Chapel until c1750.
Stained glass window in the chapel
Walled garden
Walled garden and terrace
Gardens from the Castle
View of the Gardens from the Castle
Guardian of the Battlements
Watchtower
This was rebuilt in the 1640s during the English Civil War
Castle
Harbour and Marazion from the top of the castle
Bottom of the funicular railway near the Quay
This is used to transport goods from the quay to the castle. It is almost entirely in a tunnel and was built in 1901
Footprints
These were cast in brass to commemorate the visit of the Queen Elizabeth II and the Duke of Edinburgh to St Michael's Mount in 2013. The cast footprints of Queen Victoria, Edward VII and Prince Charles can also be seen on the harbour wall.
This delightful mural outside the cafe was a community art project.
St Michael's Mount from community garden in Marazion
Causeway at low tide
Harbour on St Michael's Mount
Map mural
St Michael - amphibious vehicle
This amphibious vehicle was bought in 2002 to transport islanders to and from the island during the winter. Previously a Second World War DUKW had been used.
Harbour at low tide
Steward's House
St Michael's Mount on a misty morning
Plaque on the harbour wall commemorating the visit to St Michael's Mount by Queen Victoria and Prince Albert in September 1846
Entrance gate to the cemetery
Aftermath of Storm Goretti
119 trees on the island were blown down by Storm Goretti on 8th January 2026.
Entrance to the cemetery
St Michael amphibious vehicle, March 2026
St Michael's Mount from Chapel Rock
St Michael's Mount from Chapel Rock