A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

An eccentric playboy's astounding natural history collection.

A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A formerly abandoned mental institute, now back in business.

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

Sniff the Titan Arum's rotting flesh.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A popular European tradition makes its way to the states on one of America's most famous bridges.

From scholastic to sepulchral - now under reconstruction.

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

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

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

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

The only runway directly into the magic kingdom has been closed since 1972, but it still sings to you if you drive fast enough.

A local landmark with generations of spraypainted messages, and more being added each day.

The only Florida state park with publicly accessible caves.

Jacksonville's highways rendered this century-old grammar school unusable.

This picturesque ghost town is located on the banks of the Suwannee River.