Expansion of the border fortifications
The Wall is refortified. The restricted zone behind the Wall is extended and surrounded by barbed wire and anti-tank trenches. A special permit is now required to enter the border area. The chances of escaping grow ever slimmer in 1963.
Work is also underway on West Berlin’s sector border. The authorities install markers in the Havel Lakes to alert and protect West Berlin's water sports enthusiasts.
Berlin, Potsdamer Platz