The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

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

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

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

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

A once grand hotel is being retaken by the wilderness it once capitalized on.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

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

This once luxurious Catskills resort is now a haunting ruin.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.