From the park’s herds of bison roaming grasslands to its rugged but severe badlands, the 244,000-acre park is a living representation of classic Old West history and culture, according to Bicycle Adventures. One of the best routes is the Badlands Loop Road, which runs for 24 miles and offers extensive views of the park. Check out the Fossil Exhibit Trail and its collection of replica fossils of some of the extinct creatures. There is a 7-Day South Dakota Classic Plus Tour that takes guests to Mount Rushmore and other places.