This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

One man's vision and a labor of love of many.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

The only freestanding table rock formation east of the Mississippi.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

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

This lonely Lithuanian chapel looks more beautiful and haunting in decline than it ever did in life.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

Formerly secret, precariously perched boulders.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

Where the leftovers of love affairs can live on forever.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

This narrow shop in the East Village hosts a matchmaking service for the new millennium.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

A suspended garden, now gone, once hung in the middle of this abandoned church.

A memorial for an outsider theorist who believed that the planet is actually hollow.