WEST GERMANY. The Berlin Wall was a physical barrier separating West Berlin from the German Democratic Republic (GDR) (East Germany), including East Berlin. The longer inner German border demarcated the border between East and West Germany. Both borders came to symbolize the Iron Curtain between Western and Eastern Europe. The wall separated East Germany from West Germany for more than 25 years, from the day construction began on August 13, 1961 until it was opened on November 9th, 1989. A cross marking the spot where an escapee from the East trying to flee to the West, was killed. 1980.