The National Museum of Computing
http://www.tnmoc.org/
Computer Conservation Society
http://www.computerconservationsociety.org/
Bletchley Park
https://bletchleypark.org.uk/
Heinz Nixdorf Museum – Paderborn
http://www.hnf.de/en/home.html
Science Museum London
https://www.sciencemuseum.org.uk/
GCHQ – Government Communications Headquarters
https://www.gchq.gov.uk/
Crypto Museum
http://www.cryptomuseum.com/
Codes and Ciphers
You may also wish to visit:
Frode Weierud’s Cryptology pages
Graham Ellsbury’s essays on Enigma and the Bombe
Aileen Leblanc and Debbie Anderson’s story of the Dayton Codebreakers