The Spinning Dancer This illusion shows a silhouette of a dancer spinning. Some viewers perceive her spinning clockwise, while others see her spinning counterclockwise.
The Müller-Lyer Illusion In this illusion, two lines of the same length appear different due to the arrow-like ends at each side. The line with inward-facing arrows looks longer than the one with outward-facing arrows, though they are identical.
The Checker Shadow Illusion This famous illusion, created by Edward Adelson, makes a gray square on a checkerboard appear darker or lighter depending on the surrounding shadows. However, the squares are the same color!
The Café Wall Illusion The black and white tiles in this illusion create the appearance of slanted or curved lines, even though they are actually aligned in straight rows. The contrast between the tiles tricks the brain into perceiving distorted angles.
The Hering Illusion In this illusion, two straight lines appear to be curved due to the radiating lines behind them.
The Impossible Triangle (Penrose Triangle) This geometric figure seems to be a three-dimensional triangle that could never exist in real life. The illusion is made possible by clever use of perspective and angles, creating an "impossible" shape.
The Lilac Chaser In this illusion, you’ll see lilac dots moving around a circle, but if you stare at the center of the circle long enough, the lilac dots appear to vanish, leaving only a green dot moving in place! It’s a fascinating visual trick.