Hiroshima survivor on Riverside Drive.

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

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

Slyly buy a shake in the Parker Meridien lobby.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

Storage warehouse of the rich and famous.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

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

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

Bowl in splendor, if you're lucky.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Peek through the gates at this oasis from the city, full of Old English charm.

New York's oldest and possibly grandest keeper of books.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The 1920s child prodigy author was last seen here at her Brookline home before vanishing at age 25.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

During the holidays, a vintage subway train whisks New Yorkers back in time.

This is the house that spite built.