Geography Diversity is the keynote of Canada's geography, which includes fertile plains suitable for agriculture, vast mountain ranges, lakes and rivers. Wilderness forests give way to Arctic tundra in the Far North. There are many climatic variations in this huge country, ranging from the permanently frozen icecaps north of the 70th parallel to the luxuriant vegetation of British Columbia's west coast. Canada's most populous regions, which lie in the country's south along the U.S. border, enjoy four distinct seasons. Here daytime summer temperatures can rise to 35 C and higher, while lows of -25 C are not uncommon in winter.
More moderate temperatures are the norm in spring and fall.
There are 836 national historic sites, designated in honour of people, places and events that figure in the country's history. Canada also has over 1000 provincial parks and nearly 50 territorial parks. At 6050 m, Mount Logan in the Yukon is Canada's tallest peak. The longest Canadian river is the Mackenzie, which flows 4241 km through the Northwest Territories. Time Zones Canada has six time zones.