Engineering the Impossible (2007)

If a group of the world's most talented engineers, architects, and construction workers got together today, they would still face an almost impossible task in building the Great Pyramids, Chartres, or the Coliseum. So how were they built, hundreds, even thousands of years ago, when the technology and the tools available were so limited? This program produced by National Geographic answers these questions and provides new insights into three of the most amazing engineering feats in human history. What mysteries of human knowledge are hidden in the plans of these awe inspiring structures, which made impossible visions into brick and mortar realities?