I am one of those who really admire the famous painting of Leonardo Da Vinci's Mona Lisa. Actually I was also confused about the meaning behind Mona Lisa's smile. It seems to be very mysterious and bring curiosity among people. And so I realized that Da Vinci used his own technique called sfumato which means blurry or hazy. Aside from Mona Lisa there are other famous paintings kept in the Louvre Museum. Some of these are The Coronation of Napoleon, The Three Graces, and The Raft of the Medusa.