5. Vancouver, Canada
Vancouver is the only Canadian and North American city to make the top 10 list this year, similar to 2011.
Vancouver has made it to a number of rankings on the world's most livable cities over the past decade and has been among the top five in the Mercer quality of living survey for the past six years. Home to one of the mildest climates in Canada, Vancouver is also its greenest city with the smallest carbon footprint of any major city in North America. Surrounded by water and snowy mountains, Vancouver's government constantly promotes green building, planning, and technology with the ambition of becoming the world's greenest city by 2020.
In terms of infrastructure, Vancouver also tops the rankings for North America at ninth with Montreal and Atlanta landing in 13th place. Overall, Canadian cities still dominate the top of the rankings for North America despite only Vancouver making it into the global top 10. Ottawa comes in at 14, Toronto at 15 and Montreal at 23, while it's closet U.S. competitor is Honolulu at 28 globally.