The rugged, undeveloped, and remote Wrangell – St Elias National Park and Preserve in south-central Alaska is the largest park in the US (at 53 418 square kilometers) and promises the adventure of a lifetime. The sights alone are enough to astound – take in the spectacular glory of looming mountains (four great ranges converge in the park), photograph massive glaciers, and ice-fed rivers from a scenic flight, or embark on a trek along the park’s rugged roads. A visit to the Kennecott Mines National Historic Landmark, a perfectly preserved vestige of the area’s early 20th-century copper mining days, is a must if you'd like to delve into the heritage of the area.