An old department store turned Nazi prison turned artist commune.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

This unusual hostel provides a glimpse of life in a city under siege.

Siberian ghost town built by gulag prisoners.

This eerie sculpture overlooks what was known as the Road of Bones under Joseph Stalin.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The final resting place of the poets Shelley and Keats.

Architectureal fantasy quarter of Rome.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

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

Once America's longest-manned military fort, now an abandoned hulk.

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

Bowl in splendor, if you're lucky.

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

A decaying, yet still functioning, work of communist architecture.

New York City's only radical feminist independent bookstore.

Prove you deserve to be fed by Kenny Shopsin.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The famous author's cottage hideaway.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

A crumbling hospital from the 1850s on Roosevelt Island.

A terrific purveyor of natural history objects and curios.

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