Julian Beever is an english artist who’s famous for his art on the pavement of England, France, Germany, USA, Australia, and Belgium. It's particularity? Beever gives to his drawing an anamorphose, his images are drawn completly diforms which give a 3D image when viewing on the right angle...see for yourself it's amazing!!!
The image below has been taken to a wrong angle
This is the same one viewed on the right angle
