Kreuzberg

Kreuzberg makes up the western side of the Friedrichshain-Kreuzberg district, though the two sides are still referred to separately since they were only joined together in 2001. When the city was divided up after the war, the border between east and west ran in between Friedrichshain and Kreuzberg, leaving Kreuzberg in West Berlin.
After World War II, cheap housing attracted many students and immigrants to the neighborhood, and today, there is still a large immigrant population here, along with students and artists. It's an area of predominantly young residents and includes a wide variety of restaurants and bars, making it a great place to get dinner or a few drinks. 
One of Berlin's most well-known sights is the Oberbaum Bridge, which connects Kreuzberg with Friedrichshain on the other side of the River Spree. Other attractions in Kreuzberg include Checkpoint Charlie, the Checkpoint Charlie Museum, parts of Friedrichstrasse, the Schwules (Gay) Museum and the German Museum of Technology. Near Checkpoint Charlie, you'll also find the Peter Fechter Memorial, which honors Fechter, who was one of the first to die attempting to escape from East Berlin to West Berlin.