sidewalk art

I'm not too sure on the origins of this photograph, but I find it to be really neat. It's a form of interactive artwork, and one which the viewer can actually physically participate in.

We may stumble across sidewalk art once in a while, but how many times have we given it a second glance? Sure, it may look nice, but that's all there is to it and it's just your average 2D painting. But this form of sidewalk art actually has depth to it, a 3D effect that let's me take part in the whole experience. It's sure to catch the attention of the majority of onlookers, even if they are not often interested in art.

Perhaps this form of art can inspire others to do the same, and it will expand the interactive experience even more. Wouldn't that be a sight to see, people wandering the sidewalks and roads, not sure if they're really going to fall to their demise or if it's really just a painting?