Which National Park Service park contains the largest island in Lake Superior?

Isle Royale National Park contains Isle Royale, the largest island in Lake Superior.

Located in Michigan’s Upper Peninsula region, Isle Royale is a long, forested island surrounded by more than 400 smaller islands and the adjacent waters of Lake Superior. The park has no roads for ordinary vehicles, helping preserve its remote character and making boats and aircraft important ways to reach it.

The island has a long human history, including Indigenous copper mining that dates back thousands of years. Later mining, logging, fishing, and tourism shaped the landscape before the island became a national park on April 3, 1940.

Isle Royale is especially known for its boreal forests, shipwrecks, lighthouses, and long-running wolf-and-moose ecological studies. The park was designated an International Biosphere Reserve in 1980, reflecting its importance for studying a relatively isolated northern ecosystem.