For residents of Mackinac, Cheboygan, or Emmet counties, for one weekend, all Mackinac State Historic Parks mainland and discount the admission prices for all of our sites to what they were when we first began operating our modern museum programs for the public in 1958 (50 cents adults, 25 cents, children). This special offer includes residents of Mackinac, Cheboygan, and Emmet Counties Only. Proof of residency is required (e.g. driver’s license).