You can see the Z1 replica, as well as an implementation of the Z3 with relays in the Deutsches Technikmuseum - The Museum of Technology, in Berlin. I was fort

You can see the Z1 replica, as well as an implementation of the Z3 with relays in the Deutsches Technikmuseum - The Museum of Technology, in Berlin. I was fortunate enough while there to run into Zuse's son, Horst Zuse, also a computer scientist, fixing the Z3!