The only pachinko parlor in the United States.

Kentucky's longest operating jail is now a spooky spot to spend the night.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

Colorful collection of antique musical oddities.

One of the world's earliest skyscrapers.

Man-made geyser that rises to the exact height of the Gateway Arch.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

Wisconsin's most celebrated export gets the royal treatment on I-94.

The oldest continuously-operating tavern in Wisconsin used a clever loophole to serve alcohol during Prohibition.

This pebble beach is so beautiful that taking its rocks is against the law.

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

One-layer pyramid in Indiana.

The longest navigable underground river in the United States is home to countless blind and albino animals.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

Symbolic attempt to overcome the issues of life.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

This curious headstone is labeled simply as "The Queen."

The 40-year-old machine serves soda quicker than you can catch it for a mere 75 cents a pop.

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

Buy a token from the liquor store and you can make this beast spew flames on command.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

This lagomorph-obsessed Route 66 emporium is home to a giant jackrabbit that sits in a bunny graveyard.