Fort Clonque

Fort Clonque sits on a rock off Alderney's west coast, one of the ring of forts built in the 1850s when Britain fortified the island, reached by a causeway that the sea covers at high tide so the place is genuinely cut off twice a day. The Landmark Trust restored it and lets it as a single property, so it is lived in rather than a ruin. Concrete added later sits among the Victorian granite.

What you actually see

• The tidal causeway - the crossing that the sea covers twice a day.
• The Victorian granite - the 1850s fort walls on their rock.
• The later concrete - the mid-twentieth century additions among the older work.
• The isolation - a fort genuinely cut off at high water.

When to go

May to September is the season on Alderney. Tide tables govern access at any time of year. Winter storms make the causeway dangerous.

Honest expectations

The fort is a private let and the interior cannot be visited unless you have booked it. The causeway is genuinely dangerous when the tide is making. There is no parking at the fort itself.

Nearby

St Anne is east, and Les Etacs is north.