Bletchley Park

Bletchley Park is a historic estate in Bletchley, Milton Keynes, England that served as the principal centre for British codebreaking during World War II. It became home to the Government Code and Cypher School in 1939 and remained central to Allied signals intelligence throughout the war.

The site contains a Victorian mansion and a number of original wartime huts that house exhibitions on cryptanalysis, intelligence and wartime communications. Visitors can see displays on Enigma and Lorenz codebreaking, period equipment and personal stories from thousands of staff who worked there. The adjacent National Museum of Computing presents a working rebuilt Colossus and a collection of early electronic and mechanical computers.

Bletchley Park was requisitioned for wartime work and expanded from 1939; the codebreaking organisation operated there through World War II and into 1946. Key figures including Alan Turing worked on machine and manual methods to break enemy ciphers, and experimental machines such as Colossus were developed on site in 1943-44. The site remained secret for decades and later became a museum after its historical role was declassified.

The estate sits in Bletchley within the borough of Milton Keynes, Buckinghamshire, immediately north of Bletchley railway station and roughly 50 km northwest of central London. The park is accessible by road and rail from the greater London area.

• Surviving Huts: Several original wartime huts and the Victorian mansion survive on site; many exhibitions interpret the work of the Government Code and Cypher School from 1939 to 1946.
• Historic Computers: A rebuilt Colossus and other historic computers are displayed by the National Museum of Computing, which shares the site with the main museum.

What to See #

• The Mansion: The Victorian mansion on the estate houses permanent exhibitions about wartime codebreaking and the people who worked there, with display rooms laid out across several floors.
• Wartime Huts: A group of original wartime wooden huts have been preserved and restored; some are used for focused exhibitions on departments such as intelligence analysis and cryptanalysis, including the well known Hut 8 associated with Alan Turing.
• The National Museum of Computing: The National Museum of Computing occupies buildings on the site and presents working historic machines including a rebuilt Colossus and examples of Bombe and early computing equipment.