These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

This once luxurious Catskills resort is now a haunting ruin.

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

The lost town of Neversink, sunk by New York City.

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.

This sprawling woodland estate was the brainchild of iconic American industrial designer Russel Wright.

This house was the subject of an Edward Hopper painting, which in turn helped inspire the design of the Bates house in Alfred Hitchcock's 'Psycho.'

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

This fancifully decorated Victorian home in New York’s Hudson Valley is the only known fully domed octagonal residence in the United States.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

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

This giant rock arrived at this quiet park thousands of years ago on the back of a massive glacier.

The real-life site of Ichabod Crane's infamous gourd attack.

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

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

Home on the Hillside, and home of the first breakfast cereal.

Curtiss is a forgotten figure in the early history of flight.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This abandoned train tunnel has been the subject of countless ghost stories for years.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.