Voyageurs National Park, established in 1975, is located in its northwestern corner, on the south shore of Rainy Lake on the Canada–US border; it is popular with water enthusiasts and fishers. The county includes parts of Superior National Forest, established in 1909, and the Boundary Waters Canoe Area Wilderness on the border, established in 1978. The BWCAW is a wilderness area designated for fishing, camping, hiking, and canoeing, and is one of the most visited wilderness areas in the United States. St. Louis County has more than 500 lakes. The largest lakes are Pelican and Vermilion.