South Dakota offers more than Mt. Rushmore. The state has some beautiful state parks for locals and travelers.
http://www.ranker.com/list/best-south-dakota-state-parks/smellsrank,
Fort Sisseton
Lake City - Historic area named after the Sisseton Indians. Tours of the fort, camping, three cabins & tepee rentals. Historic Festival in June & Christmas Festival in December.
Oakwood Lakes State Park
Bruce - Nice park for winter activities, 3 hiking trails, historic area, visitor center.
Newton Hills State Park
Canton - 200 species of birds, white-tailed deer, marmots, rabbits, fox and squirrels are also found in the park.
Lake Hiddenwood State Park
Selby - An wooded oasis on the SD plains, shallow lake, fish, hike & enjoy the wildlife.
Custer State Park - Norbeck Wildlife Preserve
Custer - Great place to see wildlife adjacent to Custer State Park.
Roy Lake State Park Number 1
Lake City - Beautiful park with lots of amenities, nearby resort with cafe.
Pickerel Lake State Park
Grenville - A deep spring fed lake, 77 campsites, water activities galore!
Lake Herman State Park
Madison - Play disc golf, hike, cross-country ski, canoe, horseshoes or learn the history of the area.
Hartford Beach State Park
Corona - Nested in a wooded area on Warren River, hiking, camping, & plants make this a great park.
Custer State Park
Custer - 71,000 acres of magnificent scenery, thousands of animals roam this vast land. Chuck wagon suppers and naturalist tours.