New York's oldest and possibly grandest keeper of books.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

The famous author's cottage hideaway.

An abandoned asylum where patients have been forgotten but their possessions remain.

Unlock the secrets of the conjuring arts.

Abandoned power station once home to a squatter community, now being developed into an arts center.

Unique antiquarian shop specializing in globes, maps, and prints.

A once grand hotel is being retaken by the wilderness it once capitalized on.

One of the last Jazz Age "Wonder Theaters" in New York City.

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.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

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

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

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

An abandoned castle owned and ignored by Masons carries a cursed history.

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A legendary speakeasy bookstore returns from the brink.

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

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

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

A crumbling hospital from the 1850s on Roosevelt Island.