This hidden stone has absorbed decades of human anxiety.

Two Civil War-era cemeteries stuck between runways at the world's busiest airport.

An ideal wedding spot that is almost too ideal.

A formerly abandoned mental institute, now back in business.

An unrealized dream to wirelessly electrify the entire Earth.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

There must be a pun in this haystack somewhere...

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

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

Discover the taste of mold.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A tribute to the hard-working men and women of Grumman, who crafted F-14 fighter jets.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

Love is in the air along the small street in Brooklyn.

Before online banking and smartphone apps, there was "commuter banking" in the subway in Downtown Brooklyn.

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

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.