M119 Tunnel Of Trees out of Harbor Springs.
Anywhere around the Sleeping bear Dunes, they were voted most scenic areas in the USA.
Goodheart General Store at the end of the tunnel of trees has the worlds best pot pies, then continue to the Legs Inn for an awesome view and dining experience. Always follow the food shows when taking a road trip, they know where the good eats are.
M22 is full of win if you have time to hit the Pierce Stocking Scenic drive and Glen Arbor. A stop at the Platte river and the National Park Campground is always a perfect stop.