Checkpoint Charlie or Checkpoint C in Berlin Germany

Checkpoint Charlie (or "Checkpoint C") was the best-known Berlin Wall crossing point between East Berlin and West Berlin during the Cold War (1947–1991), as named by the Western Allies.
East German leader Walter Ulbricht agitated and maneuvered to get the Soviet Union's permission to construct the Berlin Wall in 1961 to stop emigration and defection westward through the Border system, preventing escape across the city sector border from East Berlin into West Berlin. Checkpoint Charlie became a symbol of the Cold War, representing the separation of East and West. Soviet and American tanks briefly faced each other at the location during the Berlin Crisis of 1961. On 26 June 1963, U.S. President John F. Kennedy visited Checkpoint Charlie and looked from a platform onto the Berlin Wall and into East Berlin.
After the dissolution of the Eastern Bloc and the reunification of Germany, the American guard house at Checkpoint Charlie became a tourist attraction. It is now located in the Allied Museum in the Dahlem neighborhood of Berlin.