An awesome blend of traditional architecture and street art.

A seemingly simple canyon that was the backdrop to a number of famous movies.

The largest salt lake in the Sahara is mysteriously alluring.

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

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

A superb Paleo-Christian baptismal pool is preserved among the ruins of ancient Sufetula.

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

Founded in 670, this ancient mosque is an architectural time portal.

This grand hydraulic installation has provided water for townspeople since the Middle Ages.

The best-preserved Roman small town in North Africa.

An ancient burial ground believed to have been used for ritual sacrifice.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

One of the world's largest salt caves is filled with fragile salt sculptures, salt rivers, and huge salt megadomes.

The palace of the King of Kings, burned by Alexander the Great.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

Made by a man on a worldwide sanitation crusade.

A startling, centuries-old subterranean marvel hides in plain sight.

In the foothills of the lesser Caucasus, a centuries-old fortress still stands.

Right up until the 20th century this network of man-made caves was the biggest village in Eastern Armenia.

Foreign invaders almost left this lovely Caucasus palace alone—almost.

Spring that emits water and fire at the same time is said to have remedial properties, and sparked its own religion.

Resonant stone, that has been played since prehistoric times.