The 200 miles of sand dunes fronting Lake Michigans east shore is the largest collection of freshwater coastal dunes in the world and Sleeping Bear Dunes National Lakeshore, the only National Park unit in the Lower Peninsula, is the crowning jewel. Established in 1970, the 72,000-acre park stretches between Frankfort and Leland and includes 35 miles of shoreline on the mainland, two remote islands in Lake Michigan and the largest dunes in Michigan. It's Michigan's best known destination, a park where you come to play in the dunes; to hike, ski, camp, run wildly down the Dune Climb or simply sit on top of a dune and absorb the pastel blues of Lake Michigan.