Uncover the secrets of ancient civilizations as NOVA journeys to five archaeological sites where teams of experts use traditional techniques to test their hypotheses.
1. Stonehenge watches a band of experts move, raise and cap a structure like the mysterious Stonehenge armed with Stone Age tools.
2. Inca explores magnificent mountainside citadels and marvels as villagers create a 150-foot suspension bridge using nothing but grass.
3. Obelisk faces the challenge of quarrying, chiseling, hauling and mounting an obelisk using stones, ropes, logs and dirt.
4. Colosseum tries out two possible designs for the canopy that once covered the Colosseum one of them borrowed from ancient ships.
5. Pyramid joins the race to erect an 18-foot stone pyramid in three weeks while testing out some clever construction theories.