Gates of the Arctic is the second-largest (8.4 million acres) and northernmost (lying completely above the Arctic Circle) national park in the U.S. It only received just over 10,000 visitors in 2016, due to its remoteness and lack of roads, but those self-sufficient travelers were lucky enough to enjoy some of the country’s most pristine mountain views, scenic rivers, and diverse wildlife, like wolverines, polar bears, and caribou. If you’d like to get those numbers up in future years, stick to spring and summer months, as temperatures linger around -20ºF to -50ºF from November to March.