(http://img.weburbanist.com/wp-content/uploads/2011/07/mind-your-step-4.jpg)
(http://img.weburbanist.com/wp-content/uploads/2011/07/mind-your-step-1.jpg)
Between 7-12 June 2011 Erik Johansson carried out a street illusion
called "Mind your step" at the famous square Sergels torg in the heart of Stockholm. Watching the
illusion from right position gave the impression of a 32 x 18 meter (105′ x 59′ feet) hole right down
in the ground.