World War Two secrets go on display at Bletchley Park
18 June 2014 Last updated at 14:15 BST
During World War Two, Bletchley Park was the top secret home for Britain's codebreakers.
A new museum, unveiled by the Duchess of Cambridge, showcases the work carried out by codebreakers who helped shorten the war by cracking messages from Germany's Enigma machines.
Gordon Corera reports from the ramshackle huts that have been given a new lease of life to house the new museum.