Bletchley Park mansion. At the height of its work Bletchley Park had 10,000 people working at it so there was a lot of other buildings on the site as well!
A reconstruction of The Bombe - invented by Alan Turing to help decrypt Enigma messages.
Andrew next to a working reconstruction of the Colossus machine, used to help decrypt Hitler's special codes.
Benno and Andrew marvel that these original computers are still running.
This old shack is Hut 8, where Alan Turing worked on Naval codes.
