Isleworth Mona Lisa
According to Leonardo's early biographer Giorgio Vasari, Leonardo had started to paint "Mona Lisa" in 1503, but "left it unfinished". However, a fully finished painting of a "certain Florentine lady" surfaced again in 1517, shortly before Leonardo's death and in his private possession. The latter painting almost certainly is the one that now hangs in the Louvre. Based on this contradiction, supporters of the authenticity of the "Isleworth Mona Lisa" claim it is the unfinished "Mona Lisa", made at least partially by Leonardo, and the Louvre "Mona Lisa" a later version of it, made by Leonardo for his own use.
France
Many museums in France are entirely or partly devoted to sculptures and painting works. A huge collection of old masterpieces created before or during the 18th century are displayed in the state-owned Musée du Louvre, such as Mona Lisa, also known as La Joconde. While the Louvre Palace has been for a long time a museum, the Musée d'Orsay was inaugurated in 1986 in the old railway station Gare d'Orsay, in a major reorganisation of national art collections, to gather French paintings from the second part of the 19th century (mainly Impressionism and Fauvism movements).