South Dakota's six National Park Service sites range from the surreal to the sacred, from ancient fossil beds at Badlands National Park to history etched in stone at Mount Rushmore National Memorial. Trace Lewis and Clark’s journey on one of the last wild stretches of the Missouri River, or venture underground to explore vast cave systems. You can even find Cold War relics hidden beneath the grasslands at Minuteman Missile National Historic Site.

Beyond the national parks, South Dakota's state parks might just be some of the best-kept secrets in the country. Across more than 60 parks and recreation areas, there’s no shortage of ways to enjoy the great outdoors — whether you’re hiking through granite peaks, paddling quiet lakes, snowmobiling through frosty forests or camping under wide-open skies.

Start exploring South Dakota's national and state parks below, and download the Peak to Plains passport to unlock rewards as you discover the state's most scenic sights.