" " Alaska is home to some of the most stunning (and least accessible) national parks in the United States. Robert Harding Video / ShutterstockMost people flock to Yellowstone, Yosemite, or the Grand Canyon, but the least visited national parks offer something just as remarkable: solitude. Skip the crowds and discover the underrated beauty of coral reefs and mountain peaks. AdvertisementThese lesser-known gems of the National Park Service provide a unique national park experience without the crowds, showcasing pristine wilderness, dramatic landscapes, and rich ecosystems.