The largest outdoor gallery in the world (1.3 km)was part of the Berlin Wall.
The most famous of all the murals is “The Mortal Kiss”, showing Erich Honecker (West German Chancellor) and Leonid Brezhnev (Russian Premier), leaders of their respective countries at the time of the fall (I could be wrong about that) making friends.
Some of the art is quite good.
Some of it though is just pure crap and I will not sully you with it.
Hello Kurty goes to Egypt 