Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A surrealist timepiece by the artist of melting clocks.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

France's national museum of scientific and industrial instruments.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

A mechanized clock where a man fights off a dragon, crab, and rooster.

Notorious artist squat renovated into legal studios.

This little-known relic crypt holds stolen parts of a Roman Empress.