A Fort Where History Is Literally Being Dug Up, Summer After Summer
A reconstructed 1715 French fort under the Mackinac Bridge, sitting atop one of North America's longest-running archaeological digs — active every summer since 1959.
On the shore of the Straits of Mackinac, right in the shadow of the Mackinac Bridge, stands a rebuilt 1700s fort and fur-trading village. The past here isn’t just displayed. It’s still being dug out of the ground beneath your feet.
The French built Colonial Michilimackinac in 1715 as a fur-trading post and military outpost. It was a crossroads. French-Canadian voyageurs, Native nations, and (later) British soldiers all met here to trade the furs that drove the whole Great Lakes economy. It saw real drama, too. In 1763, during Pontiac’s War, local Ojibwe warriors staged a famous surprise attack. They reportedly used a game of baggataway (an early form of lacrosse) to get inside the gates. The fort passed from French to British hands. The British finally left it behind when they moved out to Mackinac Island during the Revolution.
Here’s what makes it special today. The rebuilt fort sits on top of one of the longest-running archaeological digs in North America. Crews have dug at the original site every summer since 1959 — more than 65 years and counting. They pull up beads, tools, buttons, and the buried foundations of the original buildings. Those finds make the reconstruction more accurate. So visit in summer and you can watch real archaeologists lift 250-year-old artifacts out of the soil. Costumed interpreters fire muskets and cannons, cook over open hearths, and bring the fur-trade world to life around you.
Where to see it
Colonial Michilimackinac, in Mackinaw City, right beneath the south end of the Mackinac Bridge (off I-75, exit 339). Open roughly May through October; it's part of Mackinac State Historic Parks. The summer archaeology dig is active and visible to visitors.