One of my favourite styles of art (amongst many) is art which embeds an illusion.  At first glance you see an image and as you study the picture it completely transforms.   Or it may be that your eyes flick from one image to another, or the image seems to move, rotate, etc.

Maurits Cornelis Escher (1898-1972) is one of the greats in the art of graphic illusions.  His art is world renown and enjoyed by many.

Some of his most famous artwork would have to be ‘impossible constructions’.   A graphical building which depicts an ascending and descending staircase, the buildings are constantly metamorphosing as your eyes travel around the structure.

Please refer link below for more of Maurits Cornelis Escher work.

http://www.mcescher.com/about/biography/