Dakota Sunset Museum is at 205 W. Commercial Ave. The museum's highlight is the Medicine Rock, originally located on a hill near the Missouri River. Considered sacred to the Lakota people, the 40-ton boulder has imprints of human footprints, a handprint and several animal tracks. A mural painted by a Lakota artist interprets the rock's significance to Native Americans.
Exhibits include a Civil War display honoring the 200 veterans who settled the county, a Native American display, early 1900s furniture, a mounted big game collection, an antique barbershop, a country schoolhouse, a small barn and a blacksmith shop. An 1862 cannon and carriage, on loan from the National Park Service in Gettysburg, Penn., also are on display. Some 15,000 obituaries are on file for research.