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

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

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

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

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

One man's swirling six-acre monument of stone.

A long abandoned hospital building on the outskirts of NYC.

More gold than anywhere else, ever.

A natural gas leak provides a flickering flame beneath a waterfall.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.

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

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

This lonely cast-iron structure is the only wave-washed lighthouse of its kind left in all of Britain.

This tangled English forest looks like something right out of a fairytale.

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