PBS NOVA – Riddle Of The Sphinx (2/3)

For 45 centuries, the Great Sphinx has cast its enigmatic gaze over Egypt's Giza Plateau. The biggest and oldest statue in a land of colossal ancient monuments, its scale is staggering: The mighty head towers as tall as the White House, while its body is nearly the length of a football field. This strange half-human, half-lion image has inspired countless fantastic theories about its origins. How was it built, and who or what does it represent?