classic optical illusions that stump everyone

This elephant is at the center of a "L'egs-istential Quandary."

Can you tell how many legs this elephant has? If looking at the legs is giving you a headache.Then you'll be able to clearly see that the elephant only has four legs. The reason it looks so trippy is that the artist cut the feet that he drew and pasted them into the spaces between the legs. This confuses your brain and makes you see the spaces as legs as well.

Depending on your focus, you could see either a vase or two faces staring at each other.

If you focus on the black sections, you'll see two faces looking at each other. If you focus on the white space between, you'll see a vase.

This cube plays with human perception.

Another illusion created by M.C. Escher, the Impossible Cube first appeared in one of his lithographs called "Belvedere."

The cube is another example of a shape violating Euclidean geometry. Focus on the bottom of the cube: all of the sides of the cube appear to be overlapping each other.