The schoolhouse where Jesse Merwin, the inspiration for the "The Legend of Sleepy Hollow" character, once taught.

At this farm in upstate New York, the former president plotted his reelection campaign.

This cemetery holds the remains of an accused witch and the man that ensured her freedom.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

This backwater graveyard in the Hamptons became a trendy burial spot and posthumous status symbol for famous artists.

This private island is still in the family after a 400-year history including a witch hunt, a pirate, and multiple wars.

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

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

A journey to a hand-crafted island involves a trip across this lattice bridge.

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

A small Second Empire-style building is one of only seven remaining lighthouses on the Hudson River.

The Hudson River School comes alive at this palatial estate.

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

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

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

The remains of what was once the world's steepest passenger funicular.

This abandoned factory on the Hudson River once churned out a million bricks a week.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

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

The first American home of the isolated, egalitarian religion has a trove of Shaker architecture and artifacts.

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

"A hideous albatross in the Hudson River Valley."

This sound-art installation features songs composed using only the Mid-Hudson Bridge as an instrument.

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