Montana offers a lot if you are interested in the view. Overlooking Flathead Lake, the largest natural freshwater lake by surface area that is west of the Mississippi, this park is a real gem. Divided into upper and lower sections, the park is either a KOA (the upper section) or a private RV resort with rentable sites. It varies from about normal $ for the KOA, to a bit higher if you want the primo sites (class A only) lower on the hill. Check the web link for full details. You’ll not be disappointed in this selection!