East Germany began building the Berlin Wall on 13 August 1961 to stop its people leaving for the West. It divided the city for 28 years, until the night of 9 November 1989, when the guards opened the crossings and crowds poured through.
Before the Wall, about 3.5 million East Germans, a fifth of the population, had left for the West, many simply by crossing from East to West Berlin. Overnight on 12–13 August 1961, soldiers and workers sealed the border with barbed wire; concrete followed. East Germany called it the “Anti-Fascist Protection Rampart”, while West Berlin's mayor, Willy Brandt, called it the “Wall of Shame”. Its final version, begun in 1975, was made of 45,000 concrete slabs 3.6 metres high, with more than 100 watchtowers and a guarded strip of open ground behind it, the death strip. Even so, more than 5,000 people escaped, about 400 of them through tunnels dug underneath, and at least 140 people died at the Wall. In 1963 President John F. Kennedy told West Berliners “Ich bin ein Berliner” (“I am a Berliner”), and in 1987 Ronald Reagan urged the Soviet leader to “tear down this wall”.






