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

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

Currently housing a corporate bank branch this building at the southern tip of Manhattan was once the gateway to luxury vacationing.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

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

The oldest Methodist church in the United States has been spreading the good news for over two centuries.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

The last remnants of what was once one of the world's grandest hotels can now be found in a Manhattan subway station.

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

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.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

An accidentally hidden library containing the ephemeral history of New York.

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