Check if you can join a tour at Dampfmaschinenhaus. But if not, this historic building is still worth seeing from the outside.
You'll find Dampfmaschinenhaus in the busy neighborhood of Brandenburger Vorstadt. It's free to visit, so you can leave your credit card tucked away in your pocket. While you're in the area, why not explore some other worthwhile sights, such as Sanssouci Palace, Babelsberg Film Park and Potsdams Brandenburg Gate?