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===National parks services===
The world's first national park service was established May 19, 1911, in Canada.<ref>{{cite web |url=http://www.wwf.ca/newsroom/?uNewsID=9381 |title=WWF News and Stories |access-date=25 May 2017 |url-status=live |archive-url=https://web.archive.org/web/20171107011646/http://www.wwf.ca/newsroom/?uNewsID=9381 |archive-date=7 November 2017 |df=dmy-all }}</ref><ref>{{cite news|url=https://www.thestar.com/travel/northamerica/article/990243--parks-canada-celebrates-a-century-of-discovery|title=Parks Canada celebrates a century of discovery|last=Irish|first=Paul|date=13 May 2011|work=Toronto Star|access-date=18 May 2011|url-status=live|archive-url=https://web.archive.org/web/20110516235956/http://www.thestar.com/travel/northamerica/article/990243--parks-canada-celebrates-a-century-of-discovery|archive-date=16 May 2011|df=dmy-all}}</ref> The [[Canada National Parks Act#1911—the Dominion Forest Reserves and Parks Act|''Dominion Forest Reserves and Parks Act'']] placed the dominion parks under the administration of the Dominion Park Branch (now [[Parks Canada]]), within the Department of the Interior. The branch was established to "protect sites of natural wonder" to provide a recreational experience, centred on the idea of the natural world providing rest and spiritual renewal from the urban setting.<ref>{{cite news|url=http://www.pc.gc.ca/apprendre-learn/prof/itm2-crp-trc/htm/evolution_e.asp|title=Parks Canada History|date=2 February 2009|work=Parks Canada|access-date=30 August 2012|archive-url=https://web.archive.org/web/20161022095725/http://www.pc.gc.ca/apprendre-learn/prof/itm2-crp-trc/htm/evolution_e.asp|archive-date=22 October 2016|df=dmy-all}}</ref> Canada now has the largest protected area in the world with 450,000&nbsp;km<sup>2</sup> of national park space.<ref>{{cite news|url=https://www.pc.gc.ca/en/voyage-travel|title=Parks Canada|access-date=30 August 2012|url-status=live|archive-url=https://web.archive.org/web/20090323053512/http://www.pc.gc.ca/|archive-date=23 March 2009|df=dmy-all}}</ref>

Even with the creation of Yellowstone, Yosemite, and nearly 37 other national parks and monuments, another 44 years passed before an agency was created in the United States to administer these units in a comprehensive way&nbsp;– the U.S. [[National Park Service]] (NPS). The [[64th United States Congress]] passed the [[National Park Service Organic Act]], which [[Woodrow Wilson#Presidency, 1913–1921|President Woodrow Wilson]] signed into law on 25 August 1916. Of the {{National Park Units}} sites managed by the National Park Service of the United States, only 63 carry the designation of National Park.<ref name="USNPS">{{Cite web |url=https://www.nps.gov/aboutus/national-park-system.htm |title=National Park System (U.S. National Park Service) |date=2019-05-17 |access-date=16 July 2018 |archive-date=20 April 2022 |archive-url=https://web.archive.org/web/20220420174702/https://www.nps.gov/aboutus/national-park-system.htm |url-status=live }}</ref>[[File:Teufelsschloss-greenland.jpg|thumb|Painting ({{Circa|1900}}) of the ''[[Devil's Castle|Teufelsschloss]]'' in [[Kaiser Franz Joseph Fjord|Kaiser-Franz-Joseph-Fjord]], East Greenland. The site is now part of the Northeast Greenland National Park.]]