Wrangell-Saint Elias Wilderness
This is the world’s largest, single protected area (50 million square miles), and [it] boasts the biggest concentration of super-high mountains and glaciers in North America. In addition to copious wildlife (bear, moose, caribou, mountain goats, whales, and timber wolves), the vast park offers all sorts of adventure possibilities—backcountry hiking, mountain climbing, whitewater rafting [on] huge inland rivers, or kayaking saltwater fjords. And best of all: adrenaline-pumping bush plane flights.”