A weekend in Jay Cooke State Park, near Duluth, Minnesota, is like wandering through the pages of our northland heritage. Here you can hike a segment of the historic Grand Portage Trail, which was widely used by Voyageur canoeists in the 18th and 19th centuries and by Native Americans for thousands of years before that. The biggest hit with kids, however, is not the portage trail above the river but the squeaky 1930s era swinging footbridge that spans its banks.