A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

100 massive sculptures in the Hudson River Valley.

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

Teddy Roosevelt’s famous “midnight ride to the presidency" started at this small lake high up in the Adirondacks.

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

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

This roadside attraction attracts kids with dinosaurs before blindsiding them with geology.

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

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

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

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

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

The Hudson River School comes alive at this palatial estate.

The first evidence of some of the Earth's earliest life was found in this fossilized undersea grotto.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.