Alexanderplatz has always been one of the liveliest places in Berlin, with shops, cinemas, restaurants, and many attractions within walking distance.
Alexanderplatz in Mitte is one of the best-known public squares in Berlin – and it’s certainly the biggest. Named after Tsar Alexander I, who visited the Prussian capital in 1805, most people simply call it Alex.
Also in the winter you will find several Christmas markets at Alexanderplatz: at the Rotes Rathaus, at the Alexa shopping centre and around the world clock.
https://www.visitberlin.de/en/alexanderplatz