The Minnesota Historical Society is offering free events at several historic sites and museums. Tomorrow, visitors will be able to explore various popular destinations without charge. Some of the locations that will be open include Split Rock Lighthouse and the Mille Lacs Indian Museum & Trading Post.

Other sites, such as Mill City Museum and Oliver Kelley Farm, will also be participating. Further details about the free events can be found through the Minnesota Historical Society or KSTP 5 Eyewitness News.