Trying to fingers interesting places and things to do on the way to dc from minn. My family enjoys historical landmarks and history itself. Also enjoy the outdoors and hiking. My boys are 16 and 9. My wife and I have previously done trips such as the black Hills and badlands. As well as door County Wisconsin. And even a family road trip to Chicago. Each one, although different, was equally enjoyable for our family. We've never been east of Chicago on a road trip, so any suggestions?