The Great Theater at Apamea in northern Syria vies with the Large Theater at Ephesus, Turkey for the honor of being the largest extant Roman edifice of its type to have survived the ravages of time. Both buildings are estimated to have held audiences of over 20,000 persons, and both may have had their origins in an earlier Greek Hellenistic structure that was overbuilt in the Roman Era. Only one other theater, the Theater of Pompey in Rome, is known to have been larger. However, Pompey's lavish building is buried under the modern streets of the city, and its surviving...