As many of you will already know, outdoor advertising was banned in the city of Sao Paulo, Brazil in 1997. It was a very revolutionary bid to reclaim the visual and mental environment of the city. However, after all the ad's were removed, many people began to complain that it had left the city as a very bland concrete landscape with obvious gaps where the billboards once stood but now the blank canvas is allowing creativity to flourish. And now for the first time, São Paulo has approved a permanent outdoor art exhibition. The project, dubbed RojoOut, is bringing the city to life with colorful installations in 11 locations.