In the new Discovery Channel documentary, Koppel travels to the border of Iran's border with Iraq, the ancient capital of Isfahan, the holy city of Qom and the Persian Gulf.

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Start off high and cool in the city of Cuzco (UNESCO World Heritage Site), former capital of the ancient Inca Empire and today the undisputed archaeological king of the Americas.

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Petra is an ancient city that was sculpted out of sandstone cliffs in the southern deserts of Jordan to become the capital of the Nabataeans.

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And the Moorish Ummayad dynasty in Spain, made the city of Cordoba its capital, and installed an immense mosque on the site of an ancient Christian church there.

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