Kreuzberg, since 2001 part of the combined Friedrichshain-Kreuzberg borough located south of Mitte,'s one of the best-known areas of Berlin. Kreuzberg's often described as consisting of two distinctive parts, the SO 36, home to many immigrants and radicals, and the more middle-class SW 61, roughly coterminous with the old postal codes for the two areas in West Berlin. . Kreuzberg has emerged from its history as one of the poorest quarters in Berlin in the late 1970s, where it was an isolated se… (More on Kreuzberg)