
Tower 66 stands on Langney Point and was built, along with Tower 67, to augment the firepower of the 6-gun shore battery known as 'East Langney Fort' or 'Langney Redoubt', built in 1795.
The tower was in excellent condition, being in the service of the coastguard up until April 1989. Today it stands gutted, the door and windows having been replaced with metal bars that allow pigeons to make a mess of the interior.

A 32 pounder cannon still lies on the roof, having been finally dismounted from its carriage in 1940, to make room for the concrete roof that was built onto the top of the tower by the Royal Engineers. Two concrete blocks were placed on the firestep to enable machine-guns to be mounted, firing over the parpet and down onto the beach.
Shortly after the war, the Coastguard took over the tower, and an observation post was built onto the wartime roof.
In November 1988 an unexploded 68-pounder shell was discovered a few yards from the tower and detonated by Army bomb disposal experts. The tower now stands at the edge of the recently built Crumbles Marina, although it is currently empty, and houses harbour navigation beacons on its roof.
Tower 66 is featured in the Virtual Tour section.