Canada hosts the Olympic Winter Games for the second time in history. The XXI Olympic Winter Games come to Vancouver 22 years after Calgary hosted the XV Olympic Winter Games in 1988. Vancouver will mark the third overall appearance of Canada as host (the Games of the XXI Olympiad were held in Montreal in 1976).
At the 2010 Vancouver Games, over 2,600 athletes from 82 nations will take part, the most ever for a Winter Olympics. Five nations are making their Winter Olympic debut in Vancouver: Cayman Islands, Colombia, Ghana, Montenegro and Pakistan.
Images of the Parade of Nations at the 2010 Olympic Opening Ceremony.
Images of the U.S. delegation at the Opening Ceremony on Feb. 12.