World Gallery Apple iPhone 6 - TBWA Media Arts Lab

For the iPhone campaign, 162 non-commissioned pictures from photo-sharing apps such as Instagram and flickr were selected - after permission was secured by the amateur photographers - and placed in more than 10,000 installations across 73 cities in 25 countries, turning subway stations into art galleries and skyscrapers into canvases. Outdoor ads were splashed across cities such as Dubai, Milan, Delhi, Seoul and Bogota. Those photos ran in print media ads as well. (http://www.usatoday.com)

Reference: http://www.apple.com/iphone/world-gallery/