Speaks for itself. Called the Crown of the National Parks, we recommend at least driving the Going to the Sun Road. Keep in mind, GNP is now using a reservation system through the end of September, but after October 1st you will not need a reservation. Reservations for vehicles open at 8am the day before and are good for 3 days. Popular hikes fill up fast, so we recommend getting there when the park opens if you want to do some longer hikes.