This list of inexpensive must sees goes in order of our trip starting in South Dakota. Boon-docking in the Badlands, Wall, South Dakota— It’s free! It’s breathtaking! Just find a spot and enjoy the view! 2. Custer State Park- Custer, South Dakota $20 for a 7 day pass, 71,000 acre park full of scenic drives … Continue reading 11 Cheap, Must Sees on a Western US RV Trip!