I love optical illusions, as they put one's eyesight and imagination to the ultimate test. It's funny how people can look up into the clouds and are able to see things like animal shapes or faces in them. Some people can even see the face of someone in a potato chip or the foam of their coffee... but what about the faces in a tree?
A tree with no leaves, and just its branches, can turn into remarkable things if you just look hard enough. The fun with this particular illusion is discovering how many different faces you can find in this tree. Some people see only a half dozen, but some can see up to one dozen faces... it all depends on the limit of your own imagination.