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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

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

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

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

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

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

New York City's smallest piece of private property.

Become a prohibition rebel.

A dilapidated dock tells the story of Titanic's missed arrival.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

Elevated freight railway turned wildly successful urban park.

A miniature rainforest is growing inside of a Midtown Manhattan office building.