The U.S. National Park Service boasts an extensive, well-designed website that features resources for educators, nature lovers, history enthusiasts, and anyone interested in learning more about the many U.S. national parks and sites. One feature of this website that may especially appeal to U.S.- based readers is the Find a Park page, which allows visitors to quickly locate parks and historic sites of interest. On the site's interactive map, visitors can find parks by state and view a variety of statistics about park visitors and land area in each state. Visitors can also conduct a text search to find a particular park. This page also features a few thematic collections. One such collection is Remembering World War I, which highlights three different sites that have a connection to the first world war: Fort McHenry National Monument; Fort Vancouver National Historic Site; and Keweenaw National Historical Park. Visitors may also want to scroll to the bottom of the page to check out a list of fee-free days at national parks.