Glacier National Park is a United States National Parks|United States National Park and a UNESCO World Heritage site that is on the northern border of Montana in the United States of America. Glacier National Park is a national park in the United States that covers over one million acres of land in Montana. It is known for its stunning mountain scenery, diverse wildlife, and historic lodges. It is also part of the Waterton-Glacier International Peace Park, a UNESCO World Heritage Site that spans the border with Canada.