This is the most effective optical illusion I have seen in a while. Stare at the centre for 30 seconds. ...
This is not a GIF | Optical Illusion This is a .jpg image. Not an animated gif.
Cool 3D Optical Art
Look at the pics on the sides to change direction | Woman Turning to Left or Right
Wonderful Compilation Of Optical Illusions | Visually Perceived Images That Are Deceptive or Misleading