Fort Mackinac sits on a limestone bluff 150 feet above the harbour, commanding views across the Straits of Mackinac that make immediately clear why both the British and Americans fought over this position. The fort was active from 1780 to 1895, passing between British and American hands twice during its early years, and its fourteen restored buildings now house some of Michigan's best historical interpretation.
The exhibits cover the full sweep of the island's history — the fur trade era when this was one of the most strategically important posts in North America, the two military captures of the War of 1812, and the long peaceful period of the late 19th century when the fort served mainly as a summer garrison. Costumed interpreters demonstrate period skills, fire cannon at scheduled times, and give talks in the officers' quarters and barracks. The cannon firings draw crowds; everything else at the fort is worth lingering over.
The views from the fort's gun platforms are reason enough to visit even without the museum. You can see the Mackinac Bridge, Round Island, and on clear days far into Lake Huron. Allow at least two hours for the fort and exhibits combined. Admission includes access to all of the state historic sites on the island.