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

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

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

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

A long abandoned hospital building on the outskirts of NYC.

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

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Once America's longest-manned military fort, now an abandoned hulk.

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

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

This mouldering abandoned mental hospital was once a center for progressive healing.

An abandoned tuberculosis hospital moulders on into an uncertain future.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.