“Alexanderplatz is a large public square and transport hub in the central Mitte district of Berlin, near the Fernsehturm. Berliners often call it simply Alex, referring to a larger neighbourhood stretching from Mollstraße in the northeast to Spandauer Straße and the Rotes Rathaus in the southwest.
Alexanderplatz has been subject to redevelopment several times in its history, most recently during the 1960s, when it was turned into a pedestrian zone and enlarged as part of the German Democratic Republic’s redevelopment of the city centre. It is surrounded by several notable structures including the Fernsehturm (TV Tower), the second tallest structure in the European Union.
Ever since German reunification, Alexanderplatz has undergone a gradual process of change with many of the surrounding buildings being renovated. Despite the reconstruction of the tram line crossing, it has retained its socialist character, including the much-graffitied “Fountain of Friendship between Peoples” (Brunnen der Völkerfreundschaft), a popular venue.” (source)