When was the Berlin Wall built and when did it come down?
“An iconic symbol of the Cold War, the wall divided East and West Berlin for 28 years, from the day construction began on August 13, 1961 until it was dismantled in 1989. The night of August 12, 1961, the leaders of East Germany attended a garden party at Döllnsee, formerly the hunting grounds of Hermann Göring. Construction of 45 km (28 miles) around the three western sectors began early on Sunday, August 13, 1961 in East Berlin. On June 13, 1990, the official dismantling of the Wall by the East German military began in Bernauer Straße. On July 1, the day East Germany adopted the West German currency, all border controls ceased, although the inter-German border had become meaningless for some time before that. The dismantling continued to be carried out by military units (after unification under the Bundeswehr) and lasted until November 1991. Only a few short sections and watchtowers were left standing as memorials.
