The Deutsches Technikmuseum in Berlin has a reconstruction of the Z1.<p><a href="http:&#x2F;&#x2F;www.sdtb.de&#x2F;Mathematics-and-Computer-Science.1256.0.html" rel="nofollow">http:&#x2F;&#x2F;www.sdtb.de&#x2F;Mathematics-and-Computer-Science.1256.0.h...</a>