You were once required to sign the Official Secrets Act to enter this building. Now it’s open for visitors - and you’ve got tickets!

Hidden under the streets of Liverpool is Western Approaches HQ. This heritage site is a labyrinth of rooms and offices offering a precious time capsule. Although the 300 wartime staff have long gone, a visit to the museum will transport you back to that time and make you ask questions about the people who once worked there.

Walk through hidden rooms, including the Operations Room which has remained exactly how it was left when the doors were closed on 15 August 1945. Discover the stories locked in the WWII bunker that protected the tactics of the British Armed Forces plotting to bulwark the Western Approaches and aid the Allied victory.

Glimpse the documents and tools the Forces used to monitor enemy convoys and inform the British government of their findings, whilst keeping their intelligence secret from the enemy. This includes one of only two surviving wartime phones which had a direct connection to the London War Cabinet. You’ll also get to see where Commanders and other personnel worked day and night in the Operations Room, the nerve centre of the Battle of the Atlantic