Geology and history promise all kinds of adventures in South Dakota's Black Hills and Badlands. Trip guide: http://www.midwestliving.com/travel/south-dakota/black-hills/black-hills-and-badlands-trip-guide/
Deadwood, South Dakota. This adorable historic gaming town is tucked into the Black Hills in a little gulley. You can to go Mt. Moriah Cemetery and see the graves of Calamity Jane and Wild Bill Hickock.
Great State Park Stays: South Dakota's Custer State Park