This once-private estate is now a dreamy, meditative garden that's open to the public.

This Catskills museum preserves stumps from the earliest known fossil forest on Earth.

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

An unassuming island in the middle of the Hudson that hosts campers, including Aleister Crowley.

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

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.

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

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

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

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

A peaceful international sculpture garden in upstate New York.

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

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

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

The highest point in Connecticut was incorrectly memorialized before surveyors discovered the actual spot.

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

Who knew the Devil's domain was a hot spot for tubing?

It was founded by Ralph Nader to educate the public about an often-maligned area of law.

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

Edison's cast-in-place concrete houses were a failure, but way ahead of their time.

The largest Buddha statue in the Western Hemisphere is just 50 miles north of NYC.

This forlorn park is the result of a failed investment turned tax dodge.

The world's largest public collection of PEZ memorabilia.