I think I knew that "robot" means "worker" in Czech, but I was still surprised and amused to see it on signs. (Polish is not the same as Czech, but they're related.) I also love "Uwaga!" which I assume means "Caution!" and makes me think of alarm sirens going "aOOOOga! aOOOOOga!"
Also, check out the adorable stenciled graffiti: