Elevated freight railway turned wildly successful urban park.

A reminder to choose water over wine since 1888.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The most confusing clock in New York.

Cryptic messages embedded in the New York City sidewalk.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A bit of retro transportation flair preserved in the world's largest department store.

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

Once a dumping spot, now a park with a kayak launch.

Wine bottle sculpture with a ship's stateroom inside.

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

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Slyly buy a shake in the Parker Meridien lobby.

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.

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

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

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

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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

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

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

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