Operating Hours & Seasons
Isle Royale National Park is one of the few national parks to close during the winter. The Island is closed November 1 and will reopen on April 16. The closure is due to the extreme winter weather conditions, for the protection of wildlife, and for the safety and protection of visitors. The Park Headquarters for the winter is located in Houghton, Michigan. The summer headquarters is located at Mott Island on Isle Royale National Park.
Did You Know?
Isle Royale was designated as a Biosphere Reserve on February 17, 1981. It is part of a program designed to protect examples of the different ecosystems of the world and to encourage research. It was chosen for its unspoiled nature and represents the northern lake forest biome.