An optical illusion shared on Facebook challenged viewers to count hidden faces in a black-and-white silhouette.

(Rhythm Rathi/CBC) Ji Hyang Ryu said it took her about two weeks — and two litres of black paint — to turn the white walls into an artistic illusion. She said it was her first time working on ...

Not all optical illusions are created with oil paints. Some appear to move if you stare at them long enough, like a simple image of green heart shapes that can't seem to stay still for more than ...

That’s what makes optical illusions such a fun and powerful test ... People who quickly spot hidden shapes or strange details usually have strong memory, creative thinking, and pattern recognition.

Test your observation skills with a fun optical illusion ... Pay close attention to the black patches. The odd one out might be missing one of its shapes, or the patch might be slightly tilted ...

Here's one more clue: The bee is this image isn't your typical black-and-yellow variety ... to spot without a sharp eye for fine detail. Optical illusions are a distinctive form of brain teasers ...