Isle Royale National Park is located in Keweenaw county, in the state of Michigan, United States.
As stated in the foundation document:
The purpose of Isle Royale NatIonal Park is to set apart a remote island archipelago and surrounding waters in Lake Superior as a national park for the benefit and enjoyment of the public and to preserve and protect its wilderness character, cultural and natural resources, scenery, and ecological processes. Additionally, as a unit of the national park system, Isle Royale National Park provides opportunities for recreation, education and interpretation, and scientific study.