Travel through time with this Mackinac Family Heritage Pass. The Mackinac Family Heritage Pass provides unlimited admission throughout the season for up to two adults and all children or grandchildren under the age of 18 years old to all Mackinac State Historic Parks sites on Mackinac Island (Fort Mackinac, The Richard and Jane Manoogian Mackinac Art Museum, Biddle House, Historic Downtown Mackinac) and in Mackinaw City (Colonial Michilimackinac, Old Mackinac Point Lighthouse, Historic Mill Creek Discovery Park).