Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

Cryptic messages embedded in the New York City sidewalk.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The famous author's cottage hideaway.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The gravestones in this historic cemetery are carved with mysterious faces.

Former abode of notable poet, complete with literary references and stories of ghosts.

A former zoo turned public park, where visitors can hang out in the old animal cages.

A monument park dedicated to the influential Beat Generation author and poet, Jack Kerouac.

Site of the creepy house used in Lucio Fulci's "The House by the Cemetery."

According to legend, Bob Dylan sneaks in twice a year to eat dinner with Jack.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

No one really knows how these old hobby horses got here, but the herd keeps growing.