In Building Wonders, Nova presents three groundbreaking shows that investigate engineering mysteries of the ancient world with the help of dramatic hands-on experiments. Modern architects use medieval tools to examine the Lost City of Petra in the middle of Jordan's desert, the vast Roman Colosseum, and Turkey's 1,500 year-old cathedral dome, Hagia Sophia.

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Colosseum : Roman death trap --Petra : lost city of stone -- Hagia Sophia : Istanbul's ancient mystery.