The Enigma Trail

1. Poznań: Enigma Cipher Centre

   ul. św. Marcin 78, Poznań

   From 1929 to 1932 this was the site of the Poznań branch of the Cipher Bureau (Biuro Szyfrów), where Różycki, Zygalski and Rejewski worked. Since September 2021 it has housed the Enigma Cipher Centre, a cultural institution of the City of Poznań.¹

2. Warsaw: Saxon Palace

   Warsaw

   From September 1932 the Saxon Palace housed the Cipher Bureau’s BS-4 section. It was here, in December 1932, that the Enigma cipher was broken.^2,3,4

3. Warsaw: Pyry, Kabaty Forest

   Warsaw, Kabaty Forest near Pyry

   In the forest near Pyry stood a Cipher Bureau centre codenamed “Wicher”. Here, on 25 July 1939, the Poles showed French and British cryptologists their methods and devices.^4,5

4. Bletchley Park: memorial to the Polish cryptologists

   Bletchley Park, Milton Keynes (United Kingdom)

   By the stable yard next to the Mansion stands a memorial in the shape of an open book, commemorating Rejewski, Różycki and Zygalski as the first to break Enigma.⁶

The history of these places is told in the operation card Breaking Enigma.