Wrangell-St Elias National Park

At almost six times the six of Yellowstone, Wrangell-St Elias is undoubtedly the largest national park in the United States. It is over 13 million acres in size, and contains four major mountain ranges: the volcanic Wrangells, the Alaska, the Chugach, and the St. Elias—tallest coastal mountains in the world. Together they contain nine of the 16 highest peaks in the United States, four of them above 16,000 feet