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

The mansion home of author Edith Wharton.

New Preston and Kent, Connecticut - where Friday the 13th, Part 2 was filmed.

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

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

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

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

This statue commemorates the importance of hat manufacturing to Danbury, once known as the "Hat City of the World."

Reforestation in action is the main attraction in this abandoned quarry.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

The former home of a disgraced local priest now hosts a mysterious secret supper club.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

Take a step inside the picturesque studio of America’s most renowned sculptor.

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

Eight whimsical acres of metal art.

A nearly 100-year-old dining car in upstate New York embodies the golden age of roadside dining.

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.

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

This high-perched pachyderm marks the memory of not one, but two elephants gunned down in small New England towns.

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

The Hudson River School comes alive at this palatial estate.

An enormous cat made of recycled wood scraps.

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