16. Secrets of Lost Empires: Obelisk (3)

Pharaohs who built magnificent temples to preserve their names for eternity often graced temple gates with pairs of obelisks, four-sided shafts of granite that taper gently upward until the sides meet at the top to form a pyramid shape. NOVA's team of experts attempts to build, transport, and raise a scale model obelisk using those materials available to ancient Egyptian engineers: rope, dirt, sticks, and stones.