This Streetfilms video was shot during the UN Climate Summit in Copenhagen in 2010 and is a tour of that city's famous bicycle-friendliness and infrastructure with Mikael Colville-Anderson the blogger behind Copenhagenize.

Copenhagen wasn't always such a bicycling haven. It took many years of investment in bike infrastructure to reclaim streets from more polluting, less sustainable modes. But now fully 37 percent of commute trips are made by bike, and mode share among city residents alone is even higher.