The fall of the Berlin Wall, 20 years on

1961: On 13 August, East German soldiers set up barbed wire barricades across Berlin to restrict travel between the eastern and western parts of the city. West Berlin citizens watch as the work is carried out Photograph: AP

1961: Workers build a section of the wall in Bernauer Strasse as West Berlin police look on Photograph: DPA/EPA

1961: A man looks over the newly-built Berlin Wall Photograph: Sipa Press/Rex Features

1961: Defecting East German soldier Hans Conrad Schumann leaps over a barbed wire barricade at the Bernauer Street sector into West Berlin on 15 August. Schumann made his break for freedom to join his family, who had earlier fled to the west Photograph: Peter Leibing/ Contipress/AP

1961: A young woman, accompanied by her boyfriend, stands near the top of the Berlin Wall as she talks to her mother on the East Berlin side in August Photograph: Bettmann/Corbis

1962: Peter Fechter is carried away by East German border guards who shot him as he tried to flee to West Berlin Photograph: AP

1962: The Berlin Wall with the Brandenburg Gate in the background Photograph: CSU Archives/ Everett Collection/Rex Features

December 1963: West and East Berliners embrace as they meet at the Oberbaum Bridge border crossing point. For the first time since the Communists built the wall in 1961, West Berliners could get special passports permitting them to cross the sector border for Christmas visits to relatives in the east Photograph: Bettmann/Corbis

1981: The USSR and DDR leaders, Leonid Brezhnev and Erich Honecker, watch a military parade organised in East Berlin to celebrate the wall's anniversary Photograph: Regis Bossu/Sygma/Corbis

1985: Guards in a watchtower on the 40th anniversary of the end of the second world war Photograph: Sipa Press/Rex Features

1989: West Berliners try to break through the wall. On 9 November 1989, the wall separating fell, symbolising the end of the cold war Photograph: Sipa Press/Rex Features

1989: An East German border guard peers into the west through a gap in the Berlin Wall Photograph: Sipa Press/Rex Features

1989: East German border guards look through a hole in the Berlin Wall after demonstrators pulled down the section at the Brandenburg Gate on 11 November Photograph: Lionel Cironneau/AP

1989: Berliners celebrate on top of the wall as East Germans flood through a demolished section of the Berlin Wall at Potsdamer Platz on 12 November Photograph: Lionel Cironneau/AP

2004: A controversial art project at the former Checkpoint Charlie. Workers re-created 130 metres of the wall, and 1,065 wooden crosses commemorated people killed trying to escape from East Germany. The exhibition was initiated by the director of the Museum of the Wall, Alexandra Hildebrandt Photograph: Action Press/Rex Features

2009: The largest remaining section of the Berlin Wall. The East Side gallery, an international memorial for freedom, features paintings by German artists who decorated the remains Photograph: Action Press/Rex Features

2009: A tourist couple from Italy pose in front of the Brotherkiss mural at the East Side gallery Photograph: Sean Gallup/Getty Images

2009: Tourists look at individually painted dominos along the former route of the wall in front of the Brandenburg Gate in Berlin. The dominos, part of the celebrations of the 20th anniversary of the fall of the wall, will be toppled in a special ceremony Photograph: Axel Schmidt/AFP/Getty Images