Steepest flood safety railway in the entire world.

A toxic ghost town sitting atop a massive coal fire.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

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

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

This abandoned ironworks was once the most important military supplier in America.

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

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

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

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

This throwback amusement park is home to rides and unique storybook figures from the past.

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

Stay at this storybook estate, featuring Sir Henry Hudson Kitson's masterpiece "Gingerbread House."

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

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

The shared home of a utopian commune that practiced "free love" a century before the hippies.

A historic recreation of the golden age of the Erie Canal, abandoned for some time, slowly being restored.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

Antique gaffe kept in the basement of a small Vermont natural history museum.

Lake Champlain Bridge, the recently demolished and rebuilt bridge where they filmed "What Lies Beneath".

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Why have you never heard of the second most popular tourist site in New York?

Take a trip back to the 1950s and the heyday of the road trip along Historic Route 20.