Bletchley Park, also known as Station X, is an estate located in Bletchley, near Milton keynes in Buckinghamshire. During World War II, Bletchley Park was the site of the United Kingdom's main decryption establishment, the Government Code and Cypher School. Ciphers and codes of several Axis countries were decrypted there, most importantly ciphers generated by the German Enigma and Lorenz machines.
The high-level intelligence produced at Bletchley Park, codenamed Ultra, provided crucial assistance to the Allied war effort and is credited with having shortened the war by two years. However, Ultra's precise influence is still studied and debated.
Bletchley Park is now a museum run by the Bletchley Park Trust and is open to the public. The main manor house is also available for functions and business conferences and is licensed for ceremonies such as weddings. Part of the fees for hiring the facilities go to the Trust for use in maintaining the museum. Since 1967, Bletchley has been part of the new city of Milton Keynes.