In Berlin and Potsdam we turn the city into your playground
Berlin
All games in Berlin start and end near the Friedrichstadt-Palast. Depending on which game you play, you will pass various puzzle highlights and sights.
In Potsdam, the various games always start and end at the Tourist Information Office at Am Alten Markt, Humboldtstraße 1-2, 14467 Potsdam. This is very close to Potsdam's main train station.