While hard to imagine how it completely separated the city of Berlin, the East Side Gallery is the longest surviving section of the Berlin Wall. At 1.3km, it gives you just a hint of how it used to be. It should definitely be high on everyone’s list of what to see in Berlin.
The murals painted on it, by 105 international artists, coincidentally make it the longest open air art gallery in the world. Your local guide will know the history behind many of the individual paintings. Ask him about it and he’ll give you all the details about them. Graffiti art on the west side formed a colorful form of political protest against the greyness of the Iron Curtain almost since its inception. Most popular for selfies: Leonid Brezhnev kissing Erich Honecker.