Potsdam City Palace - Credit: Wikimedia Commons
The Potsdam City Palace () is a building in Potsdam, Germany, located on the Old Market Square, next to the St. Nicholas' Church (Nikolaikirche). It was the second official residence (the winter residence) of the margraves and electors of Brandenburg, later kings in Prussia, kings of Prussia and German emperors. Read more on Wikipedia
Source: en.wikipedia.org