The mysterious image is believed to show Edward Hyde, 3rd Earl of Clarendon, in a beautiful blue dress.

Guerilla gardeners reclaimed this abandoned railroad land literally putting down roots.

A controversial magical figure is hidden within a diorama of the city.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

A strip of modern stores in historic buildings.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

The final resting place of some of Staten Island's earliest settlers and their descendants.

Here be dragons.

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

This Bronx apartment building is officially recognized as the birthplace of hip-hop.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.

The only remaining building in New York to see the inauguration of a president is being slowly overtaken by a grocery store.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

The studio of influential composer Charles Ives is perfectly reconstructed, hidden in the back of the American Academy of Arts and Letters.

The best way to get a sneak peek at the movies.

Residents of this Brooklyn neighborhood may be unaware their houses sit atop a buried trolley graveyard.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

This elaborate tunnel is the first structure composed of cast concrete in the United States.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

Depression-era fun lives on in this Harlem museum dedicated to the sport of the street.