“Geometric drawing is fun and rewarding,” says Adele Shaw, who will teach a class at the Davis Arts Center this spring. “Once you learn a few tricks about how to demystify patterns you will understand ...

If you're a fan of optical illusions, you'll love this simple how-to tutorial from the maker of the infamous Spanish castle illusion above, John Sadow. Skip to Main Content.

Some optical illusions require creative talent. You have to draw spirals, and pick the right colors, or at least have the ability to make two faces in profile look like one vase. Not these two ...