These illusions trick you into seeing different colors, and even seeing colors that aren't really there
Some of these pictures seem to be moving while in fact they're completely still ! Other pictures are indeed moving, but produce surprising results.
Your eyes won't believe it but these shapes are all different from what they seem.
These images will look larger or smaller than they really should.
A "trompe l'Oeil" (fool the eye) is a painting or drawing so life-like, you would think it's real if you were standing there.
These are not really optical illusions, but still too fun to keep off this site.
A recursive image contains itself or references itself.
Photo's containing an illusion, by accident or deliberately.