One of the most spectacular canyons in the world.

Within the Dadès Gorge, amazing vistas and towering cliff faces can be seen at each new curve and bend in the road.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

The world's largest concentrated solar power plant.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Walk behind a 50-meter-high waterfall.

Walk 2,300 feet above the ground on the "Troll's Tongue."

This giant boulder is pinched over a 1000-meter abyss by two mountains.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

A deadly ancient portal to the underworld.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

A marvel of Byzantine engineering under the streets of Istanbul.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.