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

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

The rustic think-space of famed naturalist John Burroughs stands exactly as he left it.

100 massive sculptures in the Hudson River Valley.

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

The largest known open fault in the United States is basically a giant natural refrigerator.

This once sprawling resort now sits abandoned, filled with graffiti and vibrant colors from an era long passed.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

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

This once luxurious Catskills resort is now a haunting ruin.

At this small shop off a dirt road in the forest, the specialty is eel the owner caught and smoked himself.

Oldest existing wire suspension bridge in the United States.

A winding, cliffside stretch of road overlooking the Delaware River.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

This Central New York ghost town was once a prosperous railroad community.

A fictional town that was briefly brought to life before fading once again out of existence.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

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

The Connecticut village named for its subterranean thunder.

Final resting place of a New Haven urban legend.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.