Canada is a country in North America. It is north of the United States. Its land reaches from the Atlantic Ocean in the east to the Pacific Ocean in the west and the Arctic Ocean to the north. Canada's area is , so it is the world's second largest country by total area but only the fourth largest country by land area. It has the world's longest coastline which touches three oceans. Canada has ten provinces and three territories. Most parts of the country have a cold or severely cold winter climate, but areas to the south are warm in summer. Much of the land is forests or tundra, with the Rocky Mountains towards the west. About four fifths of Canada's 36 million people live in urban areas near the southern border with the US, the longest between any two countries in the world. The national capital is Ottawa, and the largest city is Toronto. Other large cities include Montreal, Vancouver, Calgary, Edmonton, Quebec City, Winnipeg and Hamilton.