Alexanderplatz is a large public square and transport hub in the central Mitte district of Berlin. The square is named after the Russian Tsar Alexander I, which also denotes the larger neighbourhood stretching from Mollstraße in the north-east to Spandauer Straße and the Rotes Rathaus in the south-west.

A square is an open public space used for various activities. Squares are not necessarily a true geometric square. Most squares are hardscapes suitable for open markets, concerts, political rallies, and other events that require firm ground.