The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

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

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

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

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

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

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

"A hideous albatross in the Hudson River Valley."

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The oldest continuously inhabited street in America.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

A layered tribute to the work of mosaicist Isaiah Zagar.

The world’s first penitentiary, meant to be humane, drove men insane.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

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

Ruins of a historic medical facility sits eerily by the water.

An abandoned Depression-era zoo hidden just off the highway.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.