A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

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

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This former lieutenant governor's home is brimming with curiosities.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A crucified and bearded female saint.

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

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A saintly relic hidden in a Prague church basement.

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

Two stunning 17th-century libraries and a cabinet of curiosities.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A Jenga-style cylindrical tower of books that appears to go on forever.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

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

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Pilgrimage site for star-crossed lovers.

This historic stone bridge has an entire neighborhood clinging to its sides.