Glacier National Park in northwestern Montana preserves more than 1 million acres of Rocky Mountain terrain, lakes, and ecosystems along the Canadian border. Long before its creation in 1910, the region held deep importance for Native peoples, especially the Blackfeet, whose sacred landscape included Chief Mountain and Two Medicine. The park’s boundaries were shaped in part by Chief White Calf’s 1895 land sale, while conservationists, railroad promoters, and sportsmen helped secure federal protection. Its dramatic scenery reflects ancient geologic upheaval and glaciation, while its wildlife and plant life make it one of the lower 48 states’ most intact ecosystems. Together with Waterton Lakes, it also became the world’s first international peace park.