In 2016, the Pusey Library at Harvard University created an exhibit of historic maps in honor of the centennial of the National Park Service. The exhibit, entitled "The Land Remains: A Century of Conservation in America's National Parks" featured maps from the impressive Harvard Map Collection (which features approximately 400,000 items). Betsy Mason of National Geographic visited this exhibition and wrote this article highlighting some of her favorite pieces in the collection. Maps featured in this article include Bradford Washburn's gorgeous 1978 topographic map "Heart of the Grand Canyon"; an 1872 Hayden survey map of Yellowstone; and an 1885 Hawaiian government survey map of Hawaii.