Cities can be difficult places to live. Despite all they have to offer, they often make lives difficult for its citizens -- with stairs where there should be ramps, no shelter when it rains, and nowhere to sit your weary self down.
Ogilvy & Mather Paris and IBM's "Smarter Cities" campaign try to ease things for you by turning their ads into useful, smart solutions. By adding a simple curve to a poster, they turned them into places to stand under when it rains, and someplace to sit when you're tired. With some modifications, they also turned them into a ramp for bicyclists to easily traverse.