Two New York rooftops are home to the largest rooftop soil farms in the world.

Walk into the 19th century without leaving Brooklyn.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

A hidden "place of interment for gentlemen."

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

Historical figures from New York City's Catholic community reside in Midtown.

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

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

Once America's longest-manned military fort, now an abandoned hulk.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

This abandoned subway station can still be seen on regular commuter trips.

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

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

The loneliest island in New York.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.