Fernsehturm (TV Tower)

Berlin's tallest structure at 368 meters, built by the GDR in the 1960s as a showcase of socialist engineering prowess. The observation deck at 203 meters gives a 360-degree panorama that on a clear day extends 40 km in every direction: you can trace the S-Bahn ring, pick out the Reichstag dome, follow the Spree through the city, and understand Berlin's sprawling geography in a way that no street-level walk can provide.

The tower was meant to demonstrate East German technological superiority, but it famously produced an unintended PR problem: when the sun hits the tiled sphere at a certain angle, it creates a cross-shaped reflection that Berliners dubbed "the Pope's revenge," a religious symbol atop the atheist state's proudest monument. The government was not amused.

The revolving restaurant one floor above the observation deck is overpriced by Berlin standards (EUR25 minimum spend), but a window table at sunset is genuinely memorable. The full rotation takes 30 minutes. Below the tower, Alexanderplatz is the former heart of East Berlin, an enormous concrete square anchored by the Weltzeituhr (World Time Clock) and surrounded by socialist-era architecture that is gradually being filled in with modern buildings.

Tickets for the observation deck cost EUR24.50 standard or EUR39.50 for fast-track, which skips the queue that can exceed an hour on busy days. Book the earliest morning slot or a sunset slot online. On overcast days the deck can be inside the clouds, so check the weather forecast before committing. The free alternative for panoramic views is the Reichstag dome, which has better-quality architecture but a narrower perspective.