Bob Guckert from Pittsburgh (USA) emailed one of his discoveries. It’s a logo for the Pittsburgh Zoo. Apparently, he found out that the logo holds an interesting optical illusion. He knew of this picture for sometime, but only after visiting our website, he started to see things differently. This is what Bob wrote in his email: “This is an optical illusion I have seen for many years, but didn’t notice till I started visiting your website. Thanks for making me aware of my surroundings”. If you remember, Mira foundation had a similar poster for it’s own campaign. Illusion works same way Rubin’s Vase works, and all other similar illusions we posted earlier, are just a variation of the same principle. So, can you spot the illusion hidden in the poster below? It’s easy!
