Indiana Dunes State Park Beach is a long Lake Michigan shoreline of broad sand, backed by dunes that rise nearly 200 feet. The state park has more than three miles of beach, so this is a place to walk and settle by the water, not a quick lookout. I'd make time for it if you want an open lake-and-sand day, with the Dunes Pavilion close by for food and beach supplies. Keep the two parks straight: this beach is in Indiana's state park, with its own entrance separate from Indiana Dunes National Park.