A summary of the best optical illusions on the web

An assortment of the best static optical illusions from the web.
They are called 'static' in the context that those presented here are not animated but merely images.

. Whacky Eye Candy

. Rotating Snakes

. Floating Grate

. Trippy

. Barrels

. Purple Nurple

. Scintillating Grid

. Bauble

. Black and White