The largest salt lake in the Sahara is mysteriously alluring.

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

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

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

The best-preserved Roman small town in North Africa.

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

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

This elaborate temple was built around one of the Buddha's teeth.

An ancient temple to the Hindu god Shiva surrounded by jaw-dropping scenery.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

An ancient stone fortress considered by many to be the eighth wonder of the world.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Mesoamerican monoliths and zoomorphic stones covered in royal visages, ancient mythology, and grand celestial events.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

The largest fountain in Bratislava.

Too much gossip or just missing curfew could land you in here for a couple of days.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

A perfectly preserved hill village where the buildings are painted like white lace.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."