A whimsical, but often overlooked clock in Park Avenue.

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.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

New York City's only preserved family home from the 19th century.

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

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

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

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.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

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

“Invented in Key West, Perfected in Brooklyn."

A bit of retro transportation flair preserved in the world's largest department store.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

Bowl in splendor, if you're lucky.

The first and only carousel with a lineup entirely of insects.

The famous author's cottage hideaway.