Now as much a symbol of united Berlin as any other building, the 368-metre television broadcast tower, completed in 1969, is 70m higher than the Eiffel tower and still the tallest building in Germany. Its observation deck (which also houses Berlin's highest bar) offers predictably amazing views of the entire city and beyond, while the Sphere restaurant on the floor above the viewing deck comes complete with a rotating floor. Photos as well as the Berlin TV Tower app point out the many, many Berlin landmarks for you. We recommend two visits: one by day, and one by night (it is open until midnight): you will get two completely different perspectives. Tip: buy your ticket online in advance to beat the queues. The main entrance is opposite Alexanderplatz S-Bahn train station.