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

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

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

The plague quarantine island home to the alleged "Vampire of Venice."

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.

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

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

See massive fossils that are over 200 million years old in northeastern Arizona.

Dramatic river bend surrounds a natural red-rocked pedestal.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Rippling sand dunes frozen in the Arizona rock.

Most-visited and most-photographed slot canyon in the American Southwest.

Massive stele returned to Ethiopia after 70 years in Rome.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

A failed attempt to control drifting sands yielded a gnarled sylvan wonderland.

A natural wonder in south Denmark.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

North Africa's first museum of its kind preserves the culture of Moroccan women and their artistic achievements. 

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.