A dream brief from the outset, but as Gummo's Sterre Jongerius explains, the agency wanted to do more. 'The natural two-dimensional limitations of a postage stamp could never do justice to the full majesty of these projects.' Hence they decided on creating a separate set of five stamps with a grapic representation of the building, injected with some augmented reality. By combining illustrations with QR codes, lucky recipients of the graphic representation of the five buildings can hold their letters up to a webcam and see a 3D model of the building spring to life.