One of the most spectacular canyons in the world.

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

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

The largest salt lake in the Sahara is mysteriously alluring.

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

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

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

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

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

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

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Once the home of a hermetic monk, this cave now houses a small church.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.