Potsdam Square is the core area of Berlin, close to the central Berlin Railway Station, Brandenburg Gate, the Prime Minister's Office, the Parliament Building and other core buildings, is a veritable downtown location, Potsdam Square is a relative concept, mainly with several glass curtain walls of the building, Large shopping malls, etc., near the dividing line of East and West Berlin, you can see some historical traces of the Berlin Wall, which looks very beautiful under the blue sky and white clouds.