This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Come for the sustainable organic chocolate, stay for the sustainable organic booze.

Two New York rooftops are home to the largest rooftop soil farms in the world.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

Lie in a hammock where George Washington stood.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

An artist's cute bronze subway sculptures belie his violent artistic past.

The former hotel where Tesla invented the radio.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

19th century cemetery hidden in Brooklyn's Prospect Park.

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

One man's swirling six-acre monument of stone.

The oldest surviving synagogue in New York City is now a soaring art space.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Nondescript elevator doors open to reveal a stunning, surreal world.

This innocent-looking townhome is actually a subway exit.

One of only two commuter aerial tramways in the United States.

A celebration of capitalism in Midtown.

An unrealized dream to wirelessly electrify the entire Earth.