The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

The Vatican of the movie industry turned into an actual church.

A long abandoned hospital building on the outskirts of NYC.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

The oldest continuously operating farm in New York State.

Spies, love letters, and ghost stories have all left their mark on this home-cum-museum.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

The site of a tragic massacre that spawned a multimedia franchise.

An eccentric playboy's astounding natural history collection.

A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A formerly abandoned mental institute, now back in business.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

A tiny islet just off Long Island offers a wealth of infectious curiosities.

A mysterious air force base built to resemble a Long Island fishing village.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Once America's longest-manned military fort, now an abandoned hulk.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

A town trapped in time - 1958 to be exact.

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

The mummified relics of an American missionary.

Little Red Lighthouse under the George Washington Bridge.