The headquarters of the German Naval Commander Channel Islands was established in the nearby La Collinette Hotel, and the Signal HQ was responsible for all radio traffic to and from Germany and the other Islands. Visit the last operational Signals HQ that was running up until 9 May 1945, using the Enigma code machines that were being decoded by the staff at Bletchley Park.
Opening dates and times:
6th April to 30th October 2022: 12.30 – 16.30
Admission: Adults £4, children 7+ and students £1.50, accompanied children under 7 FREE
Or buy a Discovery Pass for £20 – this annual pass is valid for 12 months and allows the adult holder seasonal entry to Castle Cornet, Guernsey Museum, Fort Grey and the German Naval Signals Headquarters, and all accompanying children under 18 years go free.