A posh members-only club with a literally dramatic history.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

Join in a Seance at the Swedenborgian Church.

A notorious punk house turned co-op.

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

Hundreds of antique bank vault locks on display in New York City.

A Manhattan Episcopal church with an eerie underground crypt.

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

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

A staggering collection of photographs depicting medical, social, and historical change.

The famous author's cottage hideaway.

Volunteer-run library dedicated to exploring five decades of activism history.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

Relics given to a Manhattan church to avoid seizure by the Italian government.

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

A good place to research the Freemasons, esoterica, occultism, and hermeticism.

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.

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

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.