Last Sunday and Monday I was in Goslar (in Germany, a five hours drive), for the presentation of some new plans. Hardly any time to sketch there. But on my way back I brought a German colleague home, he lives in a little town called Datteln. This is Ruhrgebiet: the old coalmines and steelworks area.
But Datteln has a beautiful "hebewerk": a lifting device to lift ships from one canal into another one. The height difference between the Dortmund and the Dortmund-Ems kanal is 14 meter. These kind of works make an elaborate system of locks unnecessary.
The "hebewerk" was put in operation in 1899, and worked until the late 60s.