Berlin
Two of the major events of the Cold War took place in Berlin. After World War II the city was divided into four zones. The French, British and American zone became West Berlin and the Soviet zone became East Berlin. When the Soviets tried to cut off supply routes to the city the Americans reacted by airlifting food, clothes and other supplies to Berlin to help the city survive.
In the 1950s many East Berliners moved to West Berlin to escape Communism. The East German government had no way of stopping them. During this decade thousands of people crossed the border to freedom. In 1961 the East German government erected a wall around Berlin. It became the most famous symbol of the Cold War.