The huge Potsdamer Platz has been a major focal point for Berliners since the 19th century, serving as the busy meeting point of half a dozen major thoroughfares. Historically, the square was dominated by the enormous Potsdamer train terminal before it became a hub for dining, entertainment and shopping at the turn of the 20th century. Then, Potsdamer Platz was destroyed by Allied raids during World War II. Before reunification, the barren area was a militarized no-go zone cut in two by the Berlin Wall; this no man's land was one of the first areas to be breached in November 1989.
Since the 1990s, Potsdamer Platz has undergone a total rebirth as the new heart and inspiring symbol of reunified Berlin. Take in the surroundings from the Panorama Observation Deck, and seek out the only pre-WWII building, the Weinhaus Huth.
Potsdamer Platz is just south of the Reichstag, Tiergarten and the River Spree. The closest subway is Potsdammer Platz.