In 2000, rooftops in Athens had grown so thick with billboards that it was difficult to see its famous architecture. In preparation for the 2004 Summer Olympics, the city embarked on a successful four-year project demolishing the majority of rooftop billboards to beautify the city for the tourists the games will bring, overcoming resistance from advertisers and building owners. Most of these billboards were illegal, but had been ignored up to then.

In 2007, São Paulo, Brazil instituted a billboard ban because there were no viable regulations of the billboard industry. Today, São Paulo, Brazil, is working with outdoor companies in the region to rebuild the outdoor infrastructure in a way that will reflect the vibrant business climate of the city while adopting good regulations to control growth.
Painted billboards
Advertising style
Advertising style
Inflatable and Digital billboards
Placement of billboards
Visual and environmental concerns
Road safety concerns