Mackinac National Park was a U.S. national park that existed from 1875 to 1895 on Mackinac Island in northern Michigan making it the second National Park in the United States after Yellowstone National Park in the Rocky Mountains. The 1,044-acre (422 ha) park was created in response to the growing popularity of the island as a summer resort. Its creation was largely the result of efforts by United States Senator Thomas W. Ferry, a native of the island.