A similar example of ambiguous optical illusions – father and son.
Whole family mind teaser – father with mother and daughter (by G. H. Fischer).
Sigmund Freud and what really on his mind is.
A landscape and the face of a bearded man.
Profile of Salvador Dali and a strange woman.
Rabbit and duck one more time.
Swan and squirrel ambiguous image (by G. H. Fischer).
The tabletops are identical in shape and size! I haven’t believed that either, until I measured it myself.
Stare at the dot in the center of the circle and then move your head closer to it. Neat!
Moving circles. (© Akiyoshi Kitaoka: Used with permission.)
Which central circle is bigger? The left one or the right one? Are you sure?
Is the blue wall in the block or on the block? Is it the back wall or the side wall?
Is this a complete cube or just 3 sides of it?
Are the diagonal lines parallel?
Is that a polar bear or a seal on the optical illusion picture below?