This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Nikola Tesla's former home contains an homage hidden from plain sight.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

An Italian hillside ghost town.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

A hotel with a rich Wild West history of miners and bootleggers.

This spectacular track has run continuously since 1882.

This large midwestern cavern features impressive rock formations and an underground waterfall.

The unbelievably opulent home built for an infamous newspaperman.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An obscure waterfall that looks like something out of a fantasy novel.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The site of murders and Satanic cult gatherings.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This massive redwood tree has a hole in the base big enough to drive through.

A spectacular cave and a beguiling lake.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Surreal riveted sea forts once protected the Kent shores from German attack.

The hallucinogenic center of the ancient world.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.