This week was one of many discoveries at HuffPost Arts. We found out that the Mona Lisa is not alone and that seashells are just as beautiful on the inside as they are on the outside. Annie Leibovitz wowed us with her photography exhibition at the Smithsonian Museum and Judith Prays revealed that all's fair in love and smell. And who knew that a urinal could be so controversial? Apparently when you're The Rolling Stones, scandal can't be too far behind.