An abandoned factory along the Mississippi coated by a giant mural.

This is not your typical jungle gym.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

An urban forest overtakes what was the greatest failure of utopic urban housing.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The magic's in the hole!

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Make your reservation to have coffee with some kitties.

The loneliest island in New York.

From scholastic to sepulchral - now under reconstruction.

Abandoned power station once home to a squatter community, now being developed into an arts center.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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

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

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Sniff the Titan Arum's rotting flesh.

A hip bar decorated with walls of golden skulls.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.