The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Walk over a 150 year old manhole.

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

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

A hands-on traveling collection of the innovative devices of yesteryear.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

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

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

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

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

Become a prohibition rebel.

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

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Where America's first doomsday cult awaited the end of the world.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A rare view of a preserved Victorian science museum.