If you don't remember Artem, he's the "guilty" one for many cool optical illusions we saw on this site. His latest find is this interesting picture below. I think he scanned it from some poster book. In short, the illusion below holds an interesting motive we saw many times on this site in the past. I think the title says it all. Basically, what you should do, is to move away from your screen (or narrow your eyes) until you see a portrait of famous girl, done by genius Leonardo Da Vinci.
If you find this quite amazing, be sure to notice another interesting effect those lines below create. I'm not sure if it's only me, or do they make picture bent in some way? Dunno... Also, here are some more similar illusions of this type: Marylin Monroe in pixels, Einstein in Dices, Hybrid Images, How TV Works...
If you're new here, you may want to download Optical Illusion of The Day desk