See the full episode at video.pbs.org/video/980040228 For 25 centuries, the Parthenon has been shot at, set on fire, rocked by earthquakes, looted for its sculptures, and disfigured by misguided restorations. Now, a team of architects and engineers is investigating the many mysteries of this icon of Western Civilization: How did the ancient Greeks design and build their masterpiece so quickly? www.pbs.org/wgbh/nova/