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

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

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

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

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

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

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

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

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

A dilapidated dock tells the story of Titanic's missed arrival.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

New York City's smallest piece of private property.

A semi-scholarly approach to sex.

Become a prohibition rebel.

Read a book next to a Midtown waterfall.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Tucked in the back of this amazing antique store is an important piece of medical history.

A crumbling hospital from the 1850s on Roosevelt Island.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.