Checkpoint Alpha (German: Grenzübergang Helmstedt-Marienborn) was the largest and most important border crossing on the Inner German Border during the division of Germany. Due to its geographical location, allowing for the shortest land route between West Germany and West Berlin, most transit traffic to and from West Berlin used this crossing. Most travel routes from West Germany to East Germany and Poland also used this crossing. The border crossing existed from 1945 to 1990 and interrupted the Bundesautobahn 2.
Point Alpha was one of the most important outposts of NATO. Only a stone’s throw from the camp, the GDR watchtower and the reconstructed separation barriers mark the inhumanity of the border that divided Germany, Europe and the world for over 40 long years.