Canada is a country in the northern part of North America. It's ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres, making it the world's second-largest country by total area and the fourth-largest country by land area. Canada's border with the United States is the world's longest binational land border. The majority of the country has a cold or severely cold winter climate, but southerly areas are warm in summer. Canada is sparsely populated, the majority of its land territory being dominated by forest and tundra and the Rocky Mountains. It is highly urbanised with 82 percent of the 35.15 million people concentrated in large and medium-sized cities, many near the southern border. One-third of the population lives in the three largest metropolitan areas: Toronto, Montreal and Vancouver. Its capital is Ottawa, and other major urban areas include Calgary, Edmonton, Quebec City, Winnipeg and Hamilton.