The Bebelplatz (formerly and colloquially the Opernplatz) is a public square in the central Mitte district of Berlin, the capital of Germany. Following World War II, the square was renamed after August Bebel, a founder of the Social Democratic Party of Germany in the 19th century.
The square is located on the south side of the Unter den Linden boulevard, a major east-west thoroughfare that runs through Berlin's city center. It consists of a green area to the east and an open area to the west of the State Opera building, which it surrounds (hence its prewar name). It is bounded to the east by the Prinzessinnenpalais, to the west by the Alte Bibliothek and the Old Palace, and to the southeast by St. Hedwig's Cathedral, the first Catholic church built in Prussia after the Reformation.