The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

His "Lionheart" is entombed separately from the rest of his body.

Every New Year's Day, locals don gaudy costumes and dive into the frigid Firth of Forth.

A remarkable feat of Victorian engineering across the Firth of Forth.

World's largest collection of serial killer artwork and other macabre exhibits.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.

The curious and tiny collection contains some very odd objects.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

A fiery crater has been burning in the Karakum Desert since 1971.

A bizarre house filled with an astounding array of collections.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

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

Mausoleum and Holy Seat of Antiochus I of Commagene.

An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

The best-preserved ancient theater in the world.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

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

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

Naturally protected city carved from a rock face.