St. Ignace, MI is a tourist town, with the normal souvenir shops and "attractions" designed to sell souvenirs made overseas to folks passing through or there for a day trip or so. We went into this museum fully expecting it to be just another one of those places. To our surprise and pleasure it is actually a museum in the fullest sense of the word. The various displays, as one walks through this surprisingly large museum, start with some general Michigan displays and then progresses to artifacts from the various eras ; Native American, colonial (French, British, etc) up to more recent times. The artifacts are very well displayed in well-lit cases, wall displays and floor layouts. The total floor space isn't huge but it's not a hole-in-the-wall place by any means either.
Admission is free. There is a small souvenir shop and they do accept donations to support the museum but neither of these is done in an "in your face" type presentation; they're there if you wish to partake but nobody is in the least bit pushy.
So if you're in St. Ignace and have some time before your ferry leaves for the Island and you enjoy history even just a little you really should stop in to this well-run museum.