The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

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

This mouldering abandoned mental hospital was once a center for progressive healing.

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