Harlem park dedicated to compulsive hoarders killed by their own junk.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

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

From scholastic to sepulchral - now under reconstruction.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

Outsider art meets paleontology at this roadside reptile repository.

Bizarre Cavern.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

This might just be the TARDIS of bookstores.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

The oldest farmer's market in America is so ancient it was approved by the King of England.

This free, take-a-book shop seems like a trick but isn't.

Remnants of a storybook amusement park hidden behind a strip mall.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

This derelict building used to house infirm Freemasons, their widows, and orphans.