In 1503, Leonardo came back to Florence.
He was commissioned by Francesco del Giocondo, a friend of Leonardo's father, to paint a portrait of the man's wife, Lisa Gherardini del Giocondo.
The result was the Mona Lisa (La Gioconda) (1503-1506), which
was to become one of the most famous pictures in the world, although
the portrait was not finished in time and never delivered to the client.
Leonardo received several more important commissions, including the
commission to decorate the Grand Council Chamber in the Palazzo Vecchio, the seat of government of Florence.
The wall-painting, which Leonardo left unfinished in the spring of 1506 and which
was destroyed
in the middle of the XVI century, depicted the Battle of Anghiari of 1440, when Florentine forces, together with their papal allies, defeated their Milanese opponents near
the town of Anghiari.
At the same time Michelangelo was commissioned to create a painting on the other wall of the same hall (the so-called Battle of Cascina), which was never finished either.
