Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Abandoned power station once home to a squatter community, now being developed into an arts center.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

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

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

The loneliest island in New York.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

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

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

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

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

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Nondescript elevator doors open to reveal a stunning, surreal world.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A celebration of capitalism in Midtown.

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

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

New York City's smallest piece of private property.

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

Sniff the Titan Arum's rotting flesh.

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.