Leonardo da Vinci painted the Mona Lisa between 1503 and 1506, spending four years on the portrait of Mona Lisa del Giocondo, whose mysterious smile has captivated viewers for centuries. The half-length portrait depicts the 24-year old wife of a wealthy Florentine silk merchant and is renowned for its atmospheric illusionism and subtle modeling of forms. It is now on display at the Louvre Museum in Paris, where it was stolen in 1911 but recovered.