Crystal hunters can dig for their own stones at this DIY mine in Arkansas’ quartz belt.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

These markers are used to determine the ground stability of the Strip.

A homage to the King at the hotel where he revived his career.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

An exotic wildlife habitat right off The Strip.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The secret medieval communication system will whisk your words above the noise of the crowd.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

This 16th-century monastery has been turned into a surrealist architecture compound.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

On the walking path from Monterosso to Vernazza, a small shrine dedicated to feline friends.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

This tiny chapel withstood a massive mudslide and flash flood.