Hell in Paris

The Bibliothèque Nationale in Paris opened its secret collection of erotic manuscripts and art to the public for the first time in nearly 40 years on Tuesday.

The collection, amassed over 170 years, ranges from manuscripts by the Marquis de Sade to pictures of naughty nuns and randy noblemen. The trove of licentious literature is known as L'Enfer or "Hell," a name it earned in the 1830s when the library was ordered to isolate its collection of "immoral works."

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