Chilean architect duo Pezo von Ellrichshausen has worked with Swiss artist Felice Varini to create 16 "outdoor rooms" in Hull, England, featuring steel walls that incorporate optical illusions. More about Pezo von Ellrichshausen installs 16 steel towers in Hull's historic Trinity Square
Swiss artist Felice Varini has used brightly coloured paintwork to transform the rooftop of Le Corbusier's iconic Unité d'Habitation in Marseille into a huge optical illusion (+ slideshow). More about Felice Varini creates optical illusion on roof of Le Corbusier's Unité d'Habitation
Swiss artist Felice Varini has painted curved strips onto buildings and streets in Hasselt that create a picture of overlapping rings when viewed from a single vantage point in the Belgian city. More about Felice Varini paints perspective-dependant artwork across Belgian city
London architects Glowacka Rennie have completed the interior of the ladies toilets at the V&A museum in London.
More about V&A washrooms by Glowacka Rennie