Fort Grey is a Martello tower located on a rock in Rocquaine Bay. It was previously the site of local witches' Sabbaths. The existing fort, with its white tower was originally built as a defence by the British in 1804 during the Napoleonic Wars, it was named after Charles Grey, 1st Earl Grey, who was Governor of Guernsey from 1797 to 1807.
The Fort Grey tower, like the other two Guernsey Martello towers, Fort Saumarez and Fort Hommet, was intended as a keep for the battery in which it was placed. The Guernsey Martellos are smaller than the British towers, with the Fort Saumarez and Fort Hommet towers being smaller than the Fort Grey tower. Each mounted a 24-pounder carronade on the roof to protect the battery. Fort Saumarez and Fort Hommet also have exterior staircases up to the second floor. The War Office in London sold Fort Grey to the States of Guernsey in 1891 for £185.
During the Occupation of the Channel Islands in World War II, the Germans occupied the fort, as they did most of the other fortifications in Guernsey. More recently Fort Grey has been adapted for other more peaceful uses and now operates as a local shipwreck museum, housing a number of items of marine salvage from famous wrecks, including the MV Prosperity and Elwood Mead. The items also include a cannon from HMS Boreas that points towards the nearby Hanois rocks where Boreas sank in 1807 with the loss of her captain, at least half her crew, and possibly the captain's wife.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.