Art Theft: From the Mona Lisa to Picasso's Tete de Feme Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email The Mona Lisa now sits behind glass and a barrier keeping viewers at a distance Musée du Louvre in Paris. ( Flickr user kevinofsydney ) Produced by Kristen Meinzer Produced by PRI and WNYC