St Michaels Mount is a granite rock near Penzance with a church and castle at its summit. St Michaels Mount is an island for most of the day. However there are between two and five hours in each day when you can walk across the causeway to the island. Ferry boats run regular services to the island when the tide cuts off the causeway. The island has a small harbour on its northern shore, with picturesque houses, shops and restaurants. The nearby town is Marazion and it is situated in Mounts Bay.

At the top of the island is an embattled castle, which originally was a Benedictine Priory, built in the 12 century and a daughter house to Mont St Michel in France. The Mount is dedicated to St Michael, the Archangel, who according to Cornish legend, appeared to a group of fishermen on the western side of the Mount