These lines are actually parallel even though they appear to curve.
The square in the middle appears to be curved but its perfectly straight.
Slowly move away from the screen. Does anything happen?
This will bug out your eyes.
I bet you get this one wrong!
Can you tell us what vertical line is longer? Post your answer in our comments.
This is a pretty cool illusion made from wood.
This is not what it appears to be.
Do you think this is a Young Couple or a Skull?
Do you think this is a Young Woman or an Old Lady?