Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

Former meatpacking facility turned vertical farm and sustainable business complex.

Miniature art that tells an enormous story.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

An abandoned castle owned and ignored by Masons carries a cursed history.

The secret city built by the Manhattan Project.

All that's left of the quintessential "cabin in the woods."

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

An acoustic anomaly with a mysterious cause.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

An alchemist's "magic door" stands in the middle of a Roman park.