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

World's first "penitentiary," meant to be humane, drove men insane.

A toxic ghost town sitting atop a massive coal fire.

An abandoned stretch of highway, deteriorating next to the operational one.

This enigmatic building features numerous architectural styles.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

There are eight natural springs around town, each with a slightly different taste.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

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

Dive bar built out of the remains of a whaling ship.

This Costa Rican topiary park is a surreal garden of unearthly delights.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

An ornate Detroit church, left empty and ravaged by time.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

A larger-than-life house of cards stands outside the house of a former fashion designer.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This pun was simply waiting to come to life, and one defense contractor made it so.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

In the Hugging Tree Forest, lingonberry marshmallows, hot chocolates, and the best campfire lattes north of the Arctic Circle come to you.