Wilhelm von Bezold, a German meteorologist, discovered this effect that shows the same red color appearing either lighter or darker depending on the color adjacent to it. The red on the left looks lighter with the white, but on the right, looks darker when surrounded by black. It's actually the same red. Does this illusion work for you?

A blivet, also known as a poiuyt, is an impossible object that appears to have three prongs, but transforms into just two prongs at the fixed end. Do you think this is a cool illusion?

Dr. Richard Gregory first observed this illusion in the tiles on the wall of a Bristol cafe (hence the name). The alternating light and dark bricks are staggered and the gray "mortar" lines that separate the layers. But while the lines may look as if they curve, they are actually straight across and parallel. Do these lines appear to curve to you?

The Chubb Illusion reveals that the apparent contrast of an object will vary depending on the context around the presentation. The middle circles here are exactly the same, but paired with a uniform background, the circle seems to have a higher contrast than when it's surrounded by a high-contrast texture. Do these circles appear different to you?

The Jastrow Illusion was discovered in 1889 by psychologist Joseph Jastrow and shows two objects next to one another where the top object appears to be smaller, but in reality, they are both the same size. Does this one kind of freak you out?