Some cities are adding high-tech infrastructure. Some are implementing revolutionary sustainability plans. Others are fostering innovative business and science developments. But which city combines these qualities and others to be the smartest city? A few weeks ago, Co.Exist published a ranking of European smart cities Now we are publishing the top 10 cities in North America. The rankings are based on a device developed by Boyd Cohen called the Smart Cities Wheel, which contains six key components of smart cities and three key drivers for each component. The rankings include: 1. Boston, 2. San Francisco, 3. Seattle, 4. Vancouver, 5. New York City, 6. Washington, D.C., 7. Toronto, 8. Chicago, 9. Los Angeles, 10. Montreal.