Rocketflip. See the full episode at video.pbs.org 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