The Keystone Historical Museum is housed in the old Keystone Schoolhouse building of early Victorian architecture.  Built in 1899, it served as Keystone’s full-time school until 1988.

The Museum houses early day mining tools, historic pictures and photo collections, rock and mineral collections, and historic displays including Carrie Ingalls memorabilia.

Phone: 605-666-4494

Address: 410 3rd St., Keystone, SD 57751

Website: http://www.keystonehistory.com