Unbelievable Photos That Were Declassified by the CIA

Building up the Berlin Wall

American classrooms these days talk about the tearing down of the Berlin wall more than the putting up of the wall. A lot of people are surprised to hear that the wall was constructed of scrap materials... It wasn't the most heavy-duty wall in the world, but it did the job of keeping people out. The wall was put up in 1961 and finally taken down in 1981.