We'll let them explain:
The 11 floors tower of the HESAV (Health High School Vaud) has been animated as a rudimentary screen whose pixels are, in fact, all the windows and shutters that students, staff and friends shake for hours.
Inadvertently creating perhaps the greatest photo ops ever, Rubber Duck has been traveling the world since 2007 as part of an ongoing art project by Dutch creator Florentijn Hofman. "The Rubber Duck knows no frontiers," he says. "It doesn't discriminate people and doesn't have a political connotation." The artist's large-scale art installations have graced public spaces spanning the globe since 2003.