Drawing Mona Lisa by straight lines.

The Mona Lisa or La Gioconda [la dʒoˈkonda]; is a half-length portrait painting by the Italian artist Leonardo da Vinci. It is considered an archetypal masterpiece of the Italian Renaissance, and has been described as "the best known, the most visited, the most written about, the most sung about, the most parodied work of art in the world".