Take a tour of Potsdam Old City Hall in Germany - part of the World’s Greatest Attractions travel video series by GeoBeats. The Old City Hall marks the center of Potsdam's historical old town. The building was constructed in 1755 and functions today as the city's community center. It shares the Old Market Square with some of Potsdam's landmark structures, including the Nicolas Church. The city hall's highest point is a round tower, crowned by a copper tiered dome.