When this image is flipped, it reveals a totally different picture.
Can you see a young or old woman? Look closely, they're both there!
Which can you see? Or can you see both an Eskimo and an Indian?
This square is actually perfectly drawn. It's the circles which make it look strange.
Squares A and B are actually the same shade.
There are actually no black spots in this image...
How many legs does this elephant have?
Looks like a normal triangle doesn't it? Well in fact, this would be impossible to construct.
Are these lines straight and parallel? Believe it or not, but the answer is yes!
Believe it or not, there are only two colors used in this picture!
Is this image really moving?
These two parallel lines are in fact both straight!
How many 3D cubes can you see?
This shape would be impossible to build.
Although it looks like both lines are of different lengths, they are in fact equal.