Glacier National Park in Montana on the Canada–United States border encompasses over 1 million acres (4,000 km2) and includes parts of two mountain ranges (sub-ranges of the Rocky Mountains), over 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 square miles (41,000 km2).

The park is bordered on the north by Waterton Lakes National Park in Alberta, and the Flathead Provincial Forest and Akamina-Kishinena Provincial Park in British Columbia. The park contains a dozen large lakes and 700 smaller ones, but only 131 lakes have been named.

Large mammals include Grizzly bears, moose, and mountain goats, as well as rare or endangered species like the wolverines and Canadian lynxes. . The park has numerous ecosystems ranging from prairie to tundra.