Lake Superior islands include Madeline Island in the state of Wisconsin, Michipicoten Island in the province of Ontario, and Grand Island (the location of the Grand Island National Recreation Area) in the state of Michigan. The larger cities on Lake Superior include the twin ports of Duluth, Minnesota and Superior, Wisconsin; Thunder Bay, Ontario; Marquette, Michigan; and the twin cities of Sault Ste. Marie, Michigan, and Sault Ste. Marie, Ontario. Duluth-Superior, at the western end of Lake Superior, is the most inland point on the St. Lawrence Seaway and the most inland port in the world. Among the scenic places on the
Duluth, Minnesota winter of 1997–98. The Blue Heron is part of the University National Oceanographic Laboratory System, and is available for charter by research scientists on any of the Great Lakes. Local newspapers include the "BusinessNorth" monthly, the "Duluth News Tribune", the "Duluth Budgeteer News," the free newspapers "Transistor", "The Zenith", and "The Reader Weekly". Locally based nationally distributed magazines include "Cabin Life", "Lake Superior Magazine," and "New Moon Magazine". The Duluth area marks the northern endpoint of Interstate Highway 35, which stretches south to Laredo, Texas. U.S. Highways that serve the area are U.S. Highway 53, which stretches from La Crosse,