articleThe Brief Wisconsin and Michigan have very different beaches, landscapes and sand dunes. Which side of Lake Michigan is better—the west side (Wisconsin) or the east side (Michigan)? Making of sand dunesDig deeper:On the coast of Lake Michigan, sand dunes were created millions of years ago as large glaciers covered the area. (Credit: National Park Service)Dunes in Wisconsin vs. MichiganLocal perspective:Michigan has more sand dunes and higher ones compared to Wisconsin. In fact, the sand dunes in Michigan are the largest freshwater sand dunes in the entire world!