Mackinac Island State Park

Mackinac Island State Park is a state park located on Mackinac Island in the U.S. state of Michigan. The island park encompasses 2.81 mi² (7.28 km²), which is approximately 74% of the island's total area of 3.78 mi² (9.78 km²). The park is also within the boundaries of the city of Mackinac Island and has permanent residents within its boundaries. M-185 circles the perimeter of the park as the only motorless highway in the state due to the island's ban of automobiles. The park is governed by the Michigan Department of Natural Resources and the Mackinac Island State Park Commission. On July 15, 2009, the park celebrated its 20 millionth visitor.

The park was first established as Mackinac National Park in 1875, which was the second national park established in the United States after Yellowstone National Park. In 1895, it was transferred to state control and reorganized as Mackinac Island State Park, which was the first state park in Michigan. The park contains many important historical and geological features, such as Fort Mackinac, Fort Holmes, other historic buildings, historic sites, limestone caves, and other unique rock formations. The park also operates the Mackinac Island Airport. Many of these sites are formally operated by the Mackinac Island State Park Commission, which also governs many parks around the Straits of Mackinac area.