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

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

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

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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

One of only two commuter aerial tramways in the United States.

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

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

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

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Visit the site of a subway powered by nothing more than air--and lots of it.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

This Russian bar-restaurant lies within a three-story underground bathhouse.

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

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."

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