Illusions challange us to great critical thinking.
They are designed to play with our minds and nerves.
Here are some cool optical illusions:
- Ebbinghaus Illusion
Tell me what orange circle looks bigger?
Right one?
What if I told you, they are the same size!
This illusion takes advantage of our perception of relative size. The circle above is surrounded by larger circles, making it seem like it’s smaller than a same sized circle with smaller circles around it.
2. Spiral Illusion
Are the circles touching? Are they Spirals?
It looks like they are crossing over one another. But they are not !
Peripheral vision does not accurately keep track of all the visual details, and so in some situations like in this illusion, the visual system makes errors. Amusing. Isn't it.
3. "3D" Kitchen
At first glance, this looks like a normal newspaper, right?
Creative director Felipe Salazar and graphic designer Karen Castaneda recently turned a newspaper into an ad for supermarket.
In reality paper is completely flat.
4. Check out this park inside Paris, it looks like a 3D globe

This is a 3D illusion that uses perspective and carefully planned out design to create the illusion.
Take a view from another angle.

Mind behind: Francois Abelanet and Team.
6. Penrose Stairs
In this two dimensional image, the four paths of stairs appear to link together so that a climber would go up or down the steps in a continuous loop but never arrive at a higher or lower point.
Remember, Inception!
Christopher Nolan is a genius!
Will add more soon.
Images Source : Bored Panda