Twenty years of work for an unfinished painting by Leonardo da Vinci

The Virgin and Child with Saint Anne is a masterpiece by Leonardo da Vinci that remained unfinished at his death. The painter spent the last twenty years of his life perfecting its details, successively abandoning several preparatory cartoons between 1499 and 1503. This final work kept at the Louvre thus represents a summary of all the artistic experience of the Italian master who died in 1519.