The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

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

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

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

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

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A natural gas leak provides a flickering flame beneath a waterfall.

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

An unassuming secret door once led to a legendary watering hole.

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

A very classy 1920s-era bar right in Grand Central Station.

The "Seinfeld" diner.

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.

Ride the subways of yesteryear.

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

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

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

A celebration of capitalism in Midtown.

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

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

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

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.