The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

The world's largest frame offers spectacular views of the city's past and present.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

A mesmerizing reservoir nestled at the heart of a pre-Islamic Yemeni village.

This impressive system of tanks was used to store drinking water as long as 2,000 years ago.