The book "Our National Parks" by the famous recreationist and conservationist John Muir is a fascinating scientific work that reveals to the reader the beauty and majesty of the nature of the United States. The author describes the uniqueness of natural objects, amazing landscapes and rare species of plants and animals that can be found in these protected areas. The book "Our National Parks" not only reveals the beauty of nature, but also calls for the preservation of these unique places for future generations.