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  • Bletchley Park
    This is the place where the British intelligence service broke many codes during and after WWII, including the famous Enigma codes. Bletchley Park (BP for short) is now a museum and it open to the public every day. A good map of BP can be found here.

  • TNMOC — The National Museum of Computing
    TNMOC is a British museum about the history of the modern computer, based at Bletchley Park (BP) in Milton Keynes (UK). Apart from a large and diverse collection of small and large computers – most of which are in working condition – it is also the home of wartime systems like Colossus, Heath Robinson and the Turing-Welchman Bombe.

  • NCM — National Cryptologic Museum
    NCM is the museum of the US National Security Agency (NSA), where a large number of rare cryptographic items are on public display, including the the US Bombe. The NCM is located just outside the NSA grounds in Fort Meade (Maryland, US) and is open to the general public.

  • Foundation for German Communication and Related Technologies
    Dutch: Stichting Centrum voor Duitse Verbindingen en aanverwante Technologieën.
    A wealth of background information about historical German communication equipment, predominantly pre-1960. The museum now also has a permanent exhibition that is open by appointment only. Crypto Museum co-operates with this museum.  Shadow server

  • Historische Collectie Regiment Verbindingstroepen
    The Historical Collection of the Dutch Signals Corps (formely known as the Dutch Signals Corps Museum) is one of the key places in the Netherlands to see the history of the Army's Signals Department. They have many historical military communications and cipher devices on display.

  • Enigma Cipher Centre in Poznan (Poland)
    Since September 2021, Poland has its own venue to commemorate the Polish contribution to the breaking of the Enigma cipher machine. Located at the heart of the city of Poznan is an ultra-modern experience centre: Centrum Szyfrów Enigma.  More

  • KGB Museum in Kaunas (Lithuania)
    The KGB Museum is a wonderful museum about WWI, WWII and Cold War artifacts, located in Kaunas (Lithuania). The museum was opened in 2014 and is located in a former nuclear bunker that was once used by the much-feared Soviet Intelligence Service KGB, six metres below street level.

  • Museum for Cryptography in Moscow (Russia)
    Since 2022, Russia has its own museum for cryptography — Музей Криптографии. Divided over five halls, the museum has an enormous collection of extremely rare cipher machines, some of which have never been on public display before.
Virtual Museums
  • DF3OE's Teleprinter Museum
    This virtual museum by Henning Treumann, DF3OE, is all about teleprinters (telex) and associated equipment. Henning has a large collection of teleprinters and has detailed knownledge about the backgrounds of each machine. He is also one of the promotors of the TelexPhone network. Many of his machines have been featured in block-buster movies such as Valkyrie.

  • Jerry Proc's Crypto Pages
    Although Jerry is not a crypto collector, he has gathered an enormous amount of information about cipher machines, mainly from contributions by museums, collectors and others. The site contains many photographs, background information and stories from former users of the equipment.

  • Hellschreiber Website
    All you ever want to know about the Hellschreiber. History, technology, operation, modes and models. An enormous collection of information about the famous Hellschreiver in all its varieties. Maintained by Frank Dörenberg.

  • Scannermuseum
    Interesting and very entertaining site (in Dutch) about the use of scanners during the 1970s and 1980s for listening to police radio traffic. Including sound clips and an interesting tour around the radio monitoring department of the Amsterdam Police.
  • Dirk Rijmenants, Dirk's Weblog
    Great weblog about cipher machines, cryptology, intelligence and security, maintained by Dirk Rijmenants. Also visit Dirk's website, with many nice cipher machine simulators and lots of detailed background information.

  • Christos military and intelligence corner
    Very nice blog with lots of details about military intelligence, cipher systems and codebreaking, mainly dealing with WWII. Contains also WWII TICOM reports.

  • Top Level Telecommunications
    Great blog by Peter Koop about secure and insecure telephone systems and their use. Showing US President Obama using an STE-phone and much, much more.

  • The Encoded Communications of World War II
    A brief introduction about encryption during WWII, and the Enigma machine in particular, and how it has affected todays complex world of computer science and electronic communication. With a number of interesting links to other sites.

  • Frode Weierud, CryptoCellar Tales
    Excellent blog about Enigma and cryptography in general, maintained by crypto-expert Frode Weierud in Oslo (Norway). Frode is a retired electronics engineer who previously worked for CERN in Switzerland. Over the years, Frode has (co)written a wide range of articles on crypto-related issues in various magazines, including Cryptologia.

  • Klaus Schmeh, Klausis Krypto Kolumne
    Get up to speed with the latest news and gossip in the crypto scene, with special attention to the mysterious world of hidden messages (German).
  • SAS und Chiffrierdienst (SCD)
    Very informative website, maintained by Jörg Dröbick, with detailed information about cipher machines used in the former DDR (East Germany) during the Cold War. Also detailed backgrounds on breaking western cipher systems.

  • Frode Weierud's CryptoCellar
    Informative website about cryptology and its history. Lots of backgrounds on Enigma, its people and much more. Detailed documentation about the NSA, Alan Turing, and many others. Computer simulations of Enigma, Hagelin machines, Purple, Geheimschreiber, etc.

  • Cipher Machines and Cryptology
    Very interesting and well-documented website by Dirk Rijmenants, with many technical and historical topic about WWII and Cold War cipher machines and the fascinating world of cryptology. In addition, a number of cipher machine simulators and challenges.
  • International Conference on Cryptologic History (ICCH)
    The International Conference on Cryptologic History (ICCH) is a forum for the discussion of cryptologic history. Established in 2004 as 'Crypto Collectors', the group includes members located in many countries around the world. ICCH holds events - both online and in-person – and has an e-mail list for general discussion.

  • Crypto Machine Collectors
    For collectors of historical cipher machines, there is an interesting discussion group on Yahoo. It is a closed group, which means that you will have to subscribe. Many international collectors take part in the forum and give advice whenever possible.

  • Enigma World Code Group (EWCG)
    Would you like to exchange coded Enigma messages with your friends? If so, Bruce Culp in the US might have the answer for you. He has set up a website that allows you to communicate world-wide with other enthusiasts in coded Enigma language.
  • Cyberhelden (Cyber Heroes)
    A series of highly interesting podcasts with key players in the cyber security business, made by cyber security and forensics expert Ronald Prins. In the Dutch language.
Dissolved museums
  • Stichting Onterfd Goed
    Stichting Onterfd Goed (SOG) is the only non-profit organization in The Netherlands that is specialised in dissolving (museum) collections in the least painful manner. SOG was established after Museum Scryption in Tilburg (Netherlands) was closed down in 2011.

  • Museum Jan Corver
    This was the Dutch Ham Radio Museum, located in the south of The Netherlands, close to Eindhoven. A small but interesting museum that showed the history of radio amateurism from WWII to the present. Crypto Museum co-operated with this museum on several occasions. The museum curator can still be contacted at:
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Crypto Museum. Last changed: Tuesday, 14 February 2023 - 07:46 CET.
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