This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Stadtschloss Potsdam. City palace Potsdam Germany Marble hall groundplan and three elevations Stadtschloss Potsdam Grundriss und drei Aufrisse des Marmorsaals Stiftung Schlsser und Grten PotsdamSanssouci Potsdamer Schlsser und Grten Bau und Gartenkunst vom bis Jahrhundert ca Georg Wenzeslaus von Knobelsdorff PDOld PDold Stadtschloss