Located in northern Minnesota, just south of the Canadian border, Voyageurs National Park is the definition of a ‘hidden gem’ because of its relative inaccessibility, it’s also one of the least-visited national parks in the country. Incredibly, over a third of the park is made up of water; 84,000 out of 218,000 acres are waterways. These provide access to 655 miles of pristine, unspoiled shoreline and more than 500 islands. Rent a canoe and spend a night under the stars at one of the boat-access tent sites on the Lake Kabetogama peninsula – you might even catch the aurora borealis.