Rome delivered fresh water to its people by building massive aqueducts that are still an engineering marvel today.

See how civilizations throughout history have designed and managed their plumbing and waste disposal systems.

See what the Roman Empire was like at the time of Jesus' birth in this bonus clip from "Jesus: His Life."

Built as a temple for the Goddess Athena, the Parthenon is considered one of the greatest examples of Greek architecture still standing.