The Mitchell Prehistoric Indigenous Archaeological Site & Museum

Located on the shores of Lake Mitchell, The Mitchell Prehistoric Indigenous Archaeological Site encompasses the excavation of a 1,000-year-old Indigenous Plains Village preserved within the Thomsen Center Archeodome, as well as the Boehnen Memorial Museum and surrounding grounds. Together, these facilities support archaeological research, collections care, and public interpretation, engaging local, state, and national audiences in rigorous scholarly work presented in an accessible and educational context. A National Historic Landmark, it has been at the forefront of Northern Plains archaeology for more than four decades and is the only active archaeological site open to the public in South Dakota. Summer hours for May 1 through August 1 are 9 a.m.-6 p.m., Monday through Saturday, and 10 a.m.-5 p.m., Sunday. See our website for September through April hours, as well as admission information.