Optical illusions with hidden images are an excellent form of brain food. These visual illusion pictures challenge your ...

Optical illusions are by nature notorious for tricking your brain and eyes. These popular forms of visual puzzles are a fun way to give your brain the much-needed workout. Visual illusions are brain ...

Featuring a blurry image of abstract yellows, oranges, purples and blues, this optical illusion appears pretty plain. It's ...

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...