This Colorado hiking trail provides a small gold mine of abandoned gold mines.

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

The illuminating collection of L.A. street lights is run by the city and only opens one day per month.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

A museum devoted entirely to the rattlesnakes and snake-related art.

Setting this massive marionette aflame rids Santa Fe of doom and gloom for another year.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A medieval weapon rumored to have been used by the brilliant poet himself.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

A 16th-century horror show built in a lovely Italian garden.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

This monument to one of the largest science fiction games of all time bears the names of hundreds of thousands of players.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

Climb right into the heart of this colorful Iceland volcano.