Despite the word “loop” in the name, this trail is one-way. It’s located in Glacier National Park, and even though it’s popular, it’s still one of the most treacherous hikes in the world. You’ll get gorgeous scenery, excellent views, and a chance to see wildlife. Even so, danger lurks in within the trail, as trekkers can get lost, become dehydrated, or encounter a viscous animal. Take extra precautions if you’re embarking on this trail, and make sure you go with at least one other person in case you encounter any problems (Hiking In Glacier).