I am sure you have all seen the brilliant chalk artwork that Julian Beever has created on pavement since the mid 1990s. His drawings create the illusion of three demensions. I am in awe each time I see his work and I think you will be, too. This beautiful wonderful creation drawn only in chalk on a street that will be washed away in time and if not caught on film, it would be gone forever.
You can view a video on youtube of him at work here.
(Sorry. I don't know who to give the photo credits to, as I received this in an email).