When was the "Mona Lisa" painted?

It is estimated that Leonardo da Vinci painted the Mona Lisa in Florence, Italy during the years 1503 to 1506. It is further estimated that he continued to work on the piece until the year 1517.

This historical painting hangs at the Louvre Museum in Paris, France. The woman in the painting was named Lisa Gherardini, and she was the wife of Fransisco del Giocondo, who was a wealthy silk merchant in the city of Florence. The smile of the woman in the painting is one of the remarkable traits of the work. Her smile is often referred to as an ambiguous smile, and the piece itself regarded as enigmatic.