Historic Fortifications
Spanning centuries of military history, the fortifications of Guernsey and Alderney reflect the strategic importance of the Channel Islands. This selection includes the medieval stronghold of Castle Cornet and 19th-century Martello towers like Fort Grey. The collection also features extensive German coastal defenses from the World War II occupation, such as the naval signals headquarters and converted observation towers. These sites offer insight into evolving defensive architecture, from tidal island fortresses to reinforced concrete bunkers.
A Castle Cornet
Castle Cornet is a large island castle in Guernsey, and former tidal island, also known as Cornet Rock or Castle Rock.
B Fort Grey
Fort Grey, colloquially known as the "cup and saucer", is a Martello tower located on a tidal rock in Rocquaine Bay in Saint Peter,…
C Fort Hommet
Fort Hommet is a fortification on Vazon Bay headland in Castel, Guernsey.
D Fort Tourgis
Fort Tourgis is an extensive fortification in Alderney to the north west of St Anne forming part of the Fortifications of Alderney.
E Fort Clonque
Fort Clonque is a 19th-century coastal fortress in Alderney, in the Bailiwick of Guernsey in the Channel Islands.
F Fort Saumarez
Fort Saumarez is a Martello tower in Saint Peter, Guernsey, on a headland that forms the northern tip of L'Erée and extends to the Lihou…
G MP2 - L'Erée
Fort Saumarez is a Martello tower in Saint Peter, Guernsey, on a headland that forms the northern tip of L'Erée and extends to the Lihou…
German Naval Signals HQ
Restored underground bunker that served as the nerve center for German naval communications during the World War II occupation of Guernsey. The museum displays original equipment and provides insight into wartime signal operations and naval intelligence.
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