Underneath the bustling city streets, a hydroponic farm grows unique herbs in an urban oasis.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

A castle built for love, and abandoned due to heartbreak.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

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

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

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

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

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A Hell's Kitchen synagogue that has counted stars of stage and screen among its congregation.

The only subway station in the city that still makes use of gap fillers.

An aptly-named street near the birthplace of the modern LGBT rights movement.

A touching tribute to the "Queen of Soul."

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

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

A small piece of the composer's New York home lives on in the center of Czech culture in Manhattan.

Dine on dumplings at the oldest dim sum restaurant in New York.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.