The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The famous author's cottage hideaway.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

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

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

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

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

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

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

Love, knishes, and best wishes from this legendary Lower East Side bakery.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

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

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

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

One of only two commuter aerial tramways in the United States.

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

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The "Seinfeld" diner.

The first and only carousel with a lineup entirely of insects.