Fort Clonque is a 19th-century coastal fortress in Alderney, in the Bailiwick of Guernsey in the Channel Islands. It was constructed at a time when French naval power was becoming an increasing concern to the British. It is built on a rocky outcrop of land joined to the island by a causeway that can be submerged at high tide. It was manned by fifty men and fortified with up to ten guns, mostly 68-pounders; however, none was ever fired in anger.
The fort fell into disuse before being rescued by the Landmark Trust in 1966; it now provides comfortable self-catering accommodation for up to thirteen people.[1]