This once-private estate is now a dreamy, meditative garden that's open to the public.

"A hideous albatross in the Hudson River Valley."

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

A young woman's senseless murder led to the controversial psychological theory of the "bystander effect."

An everyday Jackson Heights bodega conceals a Mexican seafood paradise.

The oldest living organism in New York City. Maybe.

Shop while you wait for a table in this tiny Indonesian eatery within a mini-mart.

Deliciousness abounds at a Guatemalan restaurant masquerading as a pizzeria.

Where the four original members of the Ramones hung out and revolutionized punk rock.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

This mysterious marker puzzles pedestrians and infuriates geographers.

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

A retired subway car stands alone in a field in the middle of Queens.

Some of New York's best tacos can be found in the back of an unassuming bodega in Queens.

The best B-movies filmed on a shoestring budget were born here.

The oldest pastificio in Queens offers visitors fresh noodles and a peek inside the macaroni-making magic.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

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

Antiques and recycled art surround this cabin designed to resemble a 19th-century schoolhouse.

An abandoned tuberculosis hospital moulders on into an uncertain future.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.