17 Optical Illusions That Will Melt Your Brain

By Tom Butler /

6. Four Round Circles

This image looks like a bunch of wonky circular shapes made up of squares right? If you look carefully though, each circle is actually perfectly round.

5. Two Identical Circles

There's two orange circles in this image, one big and one small, right? Wrong. The two orange circles are actually identical in size, but look different thanks to their surroundings.