Via New America Dream: Five Years After Banning Outdoor Ads, Brazil's Largest City Is More Vibrant Than Ever

In 2006, the mayor of São Paulo, Brazil, outlawed the use of all outdoor advertisements, including on billboards, transit, and in front of stores. The removal of logos and slogans had the unexpected result of exposing previously overlooked architecture, revealing a rich urban beauty that was long hidden.

http://www.newdream.org/resources/sao-paolo-ad-ban