Going-to-the-Sun Road is one of the prettiest drives in the world! It's not open in the winter because it isn't safe to drive on the mountains if it's icy, but if you're visiting in the summer definitely check it out! You'll likely take this road to get to some of your hikes anyway, it goes right through the park:) my favorite lookout spot on this road is Paradise Meadows and Wild Goose Island Lookout is a great spot for sunset!