The Fort can be visited
Fort Hommet
On a headland at Vazon Bay in Castel, Guernsey, lies Fort Hommet. It combines defensive structures from several centuries, including a Martello tower from the Napoleonic Wars and bunker constructions from World War II.
History+
The origins of fortifications at this point date back to 1680. An expansion occurred in 1804 with the construction of a Martello tower, initiated by Lieutenant Governor General Sir John Doyle during the Napoleonic Wars. This tower, smaller than its British counterparts, served as a redoubt for the surrounding battery and was equipped with a 24-pounder carronade on its roof. During the Victorian Era, additional batteries and barracks were added, and the armament was modernized with 68-pounder and 8-inch shell guns.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://en.wikipedia.org/wiki/File:Fort_Hommet,_with_Victorian_and_German_accretions_2.JPG
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.4744, -2.6119