Glacier National Park is an American national park located in northwestern Montana, on the Canada–United States border, adjacent to Waterton Lakes National Park in Canada—the two parks are known as the Waterton-Glacier International Peace Park. The park encompasses more than 1 million acres (4,000 km2) and includes parts of two mountain ranges, more than 130 named lakes, more than 1,000 different species of plants, and hundreds of species of animals. This vast pristine ecosystem is the centerpiece of what has been referred to as the "Crown of the Continent Ecosystem," a region of protected land encompassing 16,000 sq mi (41,000 km2).

Waterton Lakes National Park is in the southwest corner of Alberta, Canada. The national park borders Glacier National Park in Montana, United States. Waterton was the fourth Canadian national park, formed in 1895 as Kootenay Lakes Forest Reserve. It is named after Waterton Lake, in turn after the Victorian naturalist and conservationist Charles Waterton. Its range is between the Rocky Mountains and prairies. This park contains 505 km2 (195 sq mi) of rugged mountains and wilderness. It has a diverse ecosystem.