What South Dakota may lack in terms of general population, the state more than makes up for when it comes to connecting visitors to nature. Classified as a part of the Midwest, the 40th state to join the union is an outdoorsman's dream destination. It offers lush rolling hills, to expansive state parks and the wild animals that roam freely on the plains. If you're a nature buff, you may want to hop in your rental car and visit this part of the U.S. South Dakota is rich with history and can be a great learning experience for all who visit.