An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

A dilapidated dock tells the story of Titanic's missed arrival.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Nature and beauty amidst pollution and industrial wreckage.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

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

Tucked in the back of this amazing antique store is an important piece of medical history.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

The oldest living tree in Manhattan comes shrouded in sinister legend.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

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

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

A veritable variety of odds and ends.

Hear the tales of New York's most notorious criminals.

An accidentally hidden library containing the ephemeral history of New York.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

Series of storm drains connected to a dark urban legend.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

An abandoned horticulture institute gloomily presides over rows of derelict and vine-wrought greenhouses.

This once luxurious Catskills resort is now a haunting ruin.

A long abandoned hospital building on the outskirts of NYC.