The New York firm Diller Scofidio + Renfro (DS+R) gained worldwide attention in 2002 with the Blur Building, designed for that year's Swiss Expo. The volume was formed by 35,000 high-pressure nozzles that sprayed water from the lake below, creating a massive artificial cloud. Its shape, boundaries, colors, and translucency shifted with the sun and wind, offering visitors an immersive experience as they entered a fully permeable volume. Ten years later, Carla Juaçaba and Bia Lessa designed Humanidade2012 for the Rio+20 United Nations Conference, where several programmatic volumes were arranged within a massive scaffolding structure. With more voids than solids, its edges dematerialized into the sky, and at night the volumes appeared to float. According to the architects, “the very movement of people through the building turned visitors into exhibits when seen from afar.” Despite differences in scale and context, both temporary projects succeed in working with notions of translucency, lightness, the dissolution of boundaries, and movement.
