These amazing artistic optical illusions have real depth--that's because they're in 3-D! Some have to be viewed through a pair of red and blue paper glasses, which come with the book: put them on and watch decorative cubes, towers, and other complex geometric drawings spring to life, gaining volume and space. Other illusions are visible to the naked eye, with incredibly elaborate and colorful designs that seem to pop--waves of flowers, a crescent man in the moon, a coiled dragon, a blazing sunset. With a range of different visual tricks on display, and eye-popping pictures that include antique stereoscopes and hidden images, this collection is truly incredible.