The ancient Egyptians built the pyramids to honor the kings they worshipped as gods, so they were meant to last forever -- and be perfect. That makes cracks in the structure a big problem on both counts.
Egypt's chief archeologist, Dr. Zahi Hawass, explains the religious purpose of the dark, winding tunnels running three miles long, deep under the Egyptian pyramids.
Chris enlists a team of students to power a giant hamster-wheel powered crane. Can they raise a 5300 pound block of stone the way the ancient Romans did?
A section of a collapsed wall in an ancient Egyptian building how these ancient people built earthquake-resistant structures without any of the knowledge or technology used by today's seismic engineers.