Although he was retired, 
Although he was retired, Lucius Clay was responsible for ordering tanks to this location, which is also the site of a monument for Chris Gueffroy created by Karl Biedermann. The soldier Conrad Schumann was photographed by Peter Leibing in one famous moment at this location early in its development. Tunnel 57 was one tunnel built under this site by Wolfgang Fuchs. Peter Fechter was left to die after he was shot in this structure's death strip. Walter Ulbricht ordered its construction, which Erich Honecker oversaw. For 10 points, name this structure built in 1961 and torn down in 1989, which served as a physical representation of the Iron Curtain in the East German capital.
Although he was retired, Lucius Clay was responsible for ordering tanks to this location, which is also the site of a monument for Chris Gueffroy created by Karl Biedermann.
Berlin Wall [or Berliner Mauer; or Checkpoint Charlie before "Chris Gueffroy"]