Germany is marking 50 years since the building of the Berlin Wall when the communist East closed its border, dividing the city for 28 years. Berlin Mayor Klaus Wowereit told a ceremony on Bernauer Street: "The Wall is history but we must not forget it." President Christian Wulff said Germany had been securely established as a reunified country.
The city observed a minute's silence at noon (10:00 GMT) in memory of those who died trying to escape. Soldiers from the East began construction on the morning of 13 August 1961