The Fort is a Martello Tower built on a small tidal islet to defend Rocquaine Bay. It is connected to the shore by a raised causeway and is now known affectionately as the “Cup and Saucer”. It houses a shipwreck museum and offers spectacular views of the bay and the Hanois Lighthouse.
An interpretation Centre, organised by La Societe Guernesiaise and containing information about the natural history of the local area is located inside a magazine just outside the walls of the fort.