Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

An eatery for UFO seekers on the Extraterrestrial Highway.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

A collection of haunted objects and macabre oddities under one roof.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

Odd outsider art installations surround a Gold Rush-era ghost town.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

This artificial cave looks like something out of a fairytale.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

An existential riddle in the world's largest ancient castle.

Microscopic scenes; some call it novelty, some call it art.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

This doorless 20th-century elevator doesn't stop or slow down.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

Walk through Czech history in Prague's largest graveyard.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.