Gates of the Arctic

No roads, no trails, no visitor center you can drive to. Gates of the Arctic in northern Alaska is the second-largest national park in the U.S. and gets around 11,000 visitors per year — fewer people than attend a single college football game. You fly in by bush plane and navigate by map and compass through 8.4 million acres of raw Brooks Range wilderness. It's the closest thing to true exploration left in America.