Here are 10 More Incredible Optical Illusions

Due to the overwhelming response to our Top 20 Amazing Optical Illusions list, we are excited to share 10 more with you.

10. Leaning Tower Illusion

Although the two images appear to be different, they are actually identical. However, the tower on the right seems to lean more steeply. This optical illusion occurs because the brain interprets both images as part of a continuous scene. Typically, when two adjacent towers rise at the same angle, their outlines converge as they recede into the distance due to perspective, which the brain processes accordingly.

It might surprise you, but the pink spots in the image above are actually the same. Don’t take my word for it – try opening the image in Photoshop and compare them yourself.

Focus on the center of the image above for about 30 seconds, then immediately shift your gaze to a blank white wall or a piece of white paper. Keep looking at the white surface, and soon an image will begin to appear. The longer you focus, the clearer the image becomes.

This illusion works instantly – just focus on the dot in the center of the image and move your head back and forth. You'll see the rings start to rotate.

The image above consists entirely of straight lines. Don't believe it? Try using a ruler to verify for yourself.

This is incredible – the blue and green lines in the image above are actually the same color.

Click on the image above to view it in full size, then slowly move your head away from the screen.

Move your eyes around the image above, and the squares will give the illusion of rotating.

This amazing video clip demonstrates a fascinating optical illusion known as the Hollow Face Illusion.

In the image above, both monsters are actually the same size.