Incredible Visual Illusions

This book is truly a visual feast for the eyes, a fun book just to browse and look at or to learn about visual illusions.
The theory about how each optical illusion works can be very simple, or very complex, sometimes requiring advanced neurophysiology and even mathematics and calculus to understand, so there's great variation in terms of the range of difficulty and complexity.
Anyway the learning experiences you can get out of visual illusions are a greater understanding - & appreciation - of how the brain really works & its innate abilities.