Natural time capsule containing an alien ecosystem.

One of the most spectacular canyons in the world.

Founded as a refugee camp, now a popular tourist spot.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

This 7th-century monastery was sacked by Saladin.

Part shoe store, part sociopolitical art gallery, part zoo.

The deadliest diving spot in the world is also a stunning geological marvel.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

Ozymandias’ time-keeping temple.

An endless sea of white conical domes.

An ancient city exhumed from the depths of the ocean.

These homes carved into the mountains seem to defy the laws of nature.

When humans abandoned this safari lodge, the lions took over.

This rusted shipwreck directly in front of a century-old abandoned lighthouse looks almost surreal.

Zambia's smallest national park is home to one of the world's largest annual mammal migrations.

The stunningly blue waters of these beautiful caves also have a violent past.

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

The largest salt lake in the Sahara is mysteriously alluring.

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

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

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

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