Berlin marks 50 years since the building of the Wall
13 August 2011 Last updated at 11:55 BST
The German Chancellor Angela Merkel is attending ceremonies to mark 50 years since the building of the Berlin Wall.
The event will take place on Bernauer Strasse - a street which was split down the middle by the wall which separated the east and west of the city.
The BBC's Stephen Evans spoke to West Berliner Klaus-Michael Keussler, and East Berliner Wolf Kuhnelt who remember the structure being built.
Archive video courtesy British Pathe