This Street illusion was created by Erik Johnsson. This 32 x 18 meters (105′ x 59′ feet) in Stockholm at Sergels torg was titled as "Mind your step" and will be there from 7-12 June 2011.
I’ve always been quite fascinated by perspective illusions in my images and some time ago I got an idea of trying to realize one in a public space somewhere. My idea was to put a photo in an environment and actually trick people that it would have depth. Said Erik @ his Portfolio