Photographer Erik Johansson, based in Sweden, created this project called Mind your step, where, in the midst of his fascination with perspective illusions in public spaces, created a full public art project in the center of Stockholm.

As Johansson notes:

Mind your step is a large scale 32 x 18 meters (105? x 59? feet) street illusion in Stockholm at Sergels torg made by me, Erik Johansson. It will be on the square between 7-12 June 2011. For a long time I have been doing creative retouch and surreal montages. 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. Street illusions isn’t something new, but I wanted to try to make it as a photo instead of drawing and painting the streets. Photography is my medium and I wanted it to look as realistic as possible, just like my photos.