Light rail vehicles have traversed most of the cities. Although the reunification of Germany and Germany has lasted for nearly 20 years, Berlin is one of the fastest growing cities in the world, there is still some decadence in the non-prosperous areas in the east of Berlin. Near the East Railway Station, the Eastern Gallery is a 1.3-kilometer-long rubble of the Berlin Wall. More than 100 meters behind the thin wall is the Spilly River, and the other side is West Germany. In 1990, in the second year after the fall of the Berlin Wall, 118 world graffiti artists came to Berlin, splashing ink on the remaining Berlin Wall, which is now the "Eastern Gallery" - the second largest attraction in Berlin after the Brandenburg Gate. The most famous work on the broken wall is a cartoon of the Soviet Union and East German leaders Brezhnev kissing Onak. The works of the Eastern Gallery are uneven. Some of the large abstract paintings are quite impressive, while others are purely high-level graffiti.