Sleeping Bear Dunes National Lakeshore is in Michigan’s Lower Peninsula. It hugs the northeast shore of Lake Michigan and includes South and North Manitou islands. The park is known for the huge scalable dunes of the Dune Climb. Beaches include Platte River Point, where the river flows into the lake. The Sleeping Bear Heritage Trail winds through forests and the Port Oneida area with its 19th-century farmsteads.