This miniature feudal castle was built on a whim to honor a US Navy pioneer.

A modern zoetrope on the New York City subway.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

The most confusing clock in New York.

Commemorating the spot where the famous scientist fed his pigeons.

Rummage through this sunken ship, but leave your scuba gear at home.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

An annual extravaganza of Broadway theater memorabilia.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Cryptic messages embedded in the New York City sidewalk.

An artist's cute bronze subway sculptures belie his violent artistic past.

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

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

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.

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

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

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

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.

A semi-scholarly approach to sex.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

Elevated freight railway turned wildly successful urban park.