History of Berlin to intervene. In 1968 and after, West Berlin became one of the centers of the student revolt; in particular, the Kreuzberg borough was the center of many riots. The Fall of the Berlin Wall in November 1989 marks the end of the Cold War. On 9 November 1989, border guards allowed crowds from East Berlin to cross the frontier at the Bösebrücke. The guards believed that the authorities had decided to open the wall, but in reality no firm decision was taken and events gathered steam on their own. People of East and West Berlin climbed up and danced on
Berlin Wall surviving fragments of the Wall in Berlin and elsewhere around the world are generally pieces of the fourth-generation Wall. The layout came to resemble the inner German border in most technical aspects, except that the Berlin Wall had no landmines nor spring-guns. Maintenance was performed on the outside of the wall by personnel who accessed the area outside it either via ladders or via hidden doors within the wall. These doors could not be opened by a single person, needing two separate keys in two separate keyholes to unlock. As was the case with the inner German border, an unfortified