Portrait of Mona Lisa (1479-1528) by Leonardo DA VINCI (b. 1452, Vinci, Republic of Florence [now in Italy]--d. May 2, 1519, Cloux, Fr.), also known as La Gioconda , the wife of Francesco del Giocondo; 1503-06 (150 Kb); Oil on wood, 77 x 53 cm (30 x 20 7/8 in); Musee du Louvre, Paris
The above paragraphs are from the La Joconde essay on Mona Lisa. You can read the full essay at WebMuseum.
It seems I'm not the first artist to be inspired by this painting. Here's a couple of sites that are completely devoted to La Gioconda:
Mona Lisa Images for a Modern World