"Nothing and no-one can stand in the way of freedom," said
"Nothing and no-one can stand in the way of freedom," said Berlin Berlin Mayor Klaus Wowereit
German Chancellor Angela Merkel walks along a section of the former Berlin Wall at the memorial in Bernauer Strasse, during a ceremony marking the 25th anniversary of the fall of the Berlin Wall, in Berlin on November 9, 2014.
1 of 8
The 25th anniversary of the fall of the Berlin Wall was marked by the release of 8,000 helium balloons over the German capital.
The Berlin Wall was constructed in 1961 to prevent people fleeing the Soviet-controlled East into the more free and affluent West.
Its fall in 1989 was a symbolic start to the process that would eventually end the Cold War.