https://theparkatlas.com/ One fact a day from Park Atlas, drawn from the data behind the site. en-us Wed, 14 Oct 2026 10:00:00 GMT https://theparkatlas.com/fees/ https://theparkatlas.com/#fact-2026-10-14-top-fee Wed, 14 Oct 2026 10:00:00 GMT The highest entrance fee is $35 per vehicle, charged at 10 units including Acadia National Park. https://theparkatlas.com/parks/grca/ https://theparkatlas.com/#fact-2026-10-13-most-birds Tue, 13 Oct 2026 10:00:00 GMT Grand Canyon National Park documents 447 bird species, the most of any unit. https://theparkatlas.com/states/dc/ https://theparkatlas.com/#fact-2026-10-11-state-most Sun, 11 Oct 2026 10:00:00 GMT Washington, DC has 36 park units, more than any state. https://theparkatlas.com/parks/zion/ https://theparkatlas.com/#fact-2026-10-04-rank-zion Sun, 04 Oct 2026 10:00:00 GMT Zion National Park had 4,984,525 visits in 2025, 11th of 387 units that report. https://theparkatlas.com/parks/vive/ https://theparkatlas.com/#fact-2026-10-03-rank-vive Sat, 03 Oct 2026 10:00:00 GMT Vietnam Veterans Memorial had 4,848,112 visits in 2025, 12th of 387 units that report. https://theparkatlas.com/parks/deva/ https://theparkatlas.com/#fact-2026-10-02-largest Fri, 02 Oct 2026 10:00:00 GMT Death Valley National Park covers about 5,270 square miles, the largest unit in the system. https://theparkatlas.com/parks/yell/ https://theparkatlas.com/#fact-2026-10-01-oldest Thu, 01 Oct 2026 10:00:00 GMT Yellowstone National Park, established in 1872, is the oldest of the 36 national parks. https://theparkatlas.com/parks/choh/ https://theparkatlas.com/#fact-2026-09-28-most-campgrounds Mon, 28 Sep 2026 10:00:00 GMT Chesapeake & Ohio Canal National Historical Park lists 37 campgrounds, more than any other unit. 356 units list none. https://theparkatlas.com/parks/ https://theparkatlas.com/#fact-2026-09-27-designations Sun, 27 Sep 2026 10:00:00 GMT Only 51 of the 474 units are named National Park. The rest carry 46 other designations, from battlefield to seashore. https://theparkatlas.com/parks/indu/ https://theparkatlas.com/#fact-2026-09-26-newest Sat, 26 Sep 2026 10:00:00 GMT Indiana Dunes National Park, established in 2019, is the newest national park. https://theparkatlas.com/parks/cave/ https://theparkatlas.com/#fact-2026-09-25-unesco Fri, 25 Sep 2026 10:00:00 GMT 12 park units are also UNESCO World Heritage Sites. Carlsbad Caverns National Park is one. https://theparkatlas.com/parks/guis/ https://theparkatlas.com/#fact-2026-09-23-rank-guis Wed, 23 Sep 2026 10:00:00 GMT Gulf Islands National Seashore had 7,576,923 visits in 2025, 7th of 387 units that report. https://theparkatlas.com/reservations/ https://theparkatlas.com/#fact-2026-09-22-timed-entry Tue, 22 Sep 2026 10:00:00 GMT Only 12 of 474 units require a timed-entry reservation. Acadia National Park is one. https://theparkatlas.com/guides/national-parks-free-entrance-days/ https://theparkatlas.com/#fact-2026-09-21-fee-free-next Mon, 21 Sep 2026 10:00:00 GMT Entrance is free at every park on October 27, Theodore Roosevelt's birthday, for US residents. 2 such days remain this year. https://theparkatlas.com/parks/appa/ https://theparkatlas.com/#fact-2026-09-18-rank-appa Fri, 18 Sep 2026 10:00:00 GMT Appalachian National Scenic Trail had 6,215,118 visits in 2025, 9th of 387 units that report. https://theparkatlas.com/parks/natr/ https://theparkatlas.com/#fact-2026-09-17-rank-natr Thu, 17 Sep 2026 10:00:00 GMT Natchez Trace Parkway had 7,994,783 visits in 2025, 4th of 387 units that report. https://theparkatlas.com/guides/nonresident-fee-2026/ https://theparkatlas.com/#fact-2026-09-16-nonresident Wed, 16 Sep 2026 10:00:00 GMT 11 parks charge non-US residents an extra $100 a person in 2026. The other 463 charge them nothing extra. https://theparkatlas.com/activities/astronomy/ https://theparkatlas.com/#fact-2026-09-15-dark-sky Tue, 15 Sep 2026 10:00:00 GMT 50 units are certified International Dark Sky Parks. Arches National Park is one of them. https://theparkatlas.com/parks/goga/ https://theparkatlas.com/#fact-2026-09-14-rank-goga Mon, 14 Sep 2026 10:00:00 GMT Golden Gate National Recreation Area had 15,748,676 visits in 2025, 2nd of 387 units that report. https://theparkatlas.com/parks/cawo/ https://theparkatlas.com/#fact-2026-09-13-least-visited Sun, 13 Sep 2026 10:00:00 GMT Carter G. Woodson Home National Historic Site recorded 20 visits in 2025, fewer than any other unit that reports. https://theparkatlas.com/parks/linc/ https://theparkatlas.com/#fact-2026-09-12-rank-linc Sat, 12 Sep 2026 10:00:00 GMT Lincoln Memorial had 7,743,295 visits in 2025, 5th of 387 units that report. https://theparkatlas.com/parks/lake/ https://theparkatlas.com/#fact-2026-09-11-rank-lake Fri, 11 Sep 2026 10:00:00 GMT Lake Mead National Recreation Area had 6,135,586 visits in 2025, 10th of 387 units that report. https://theparkatlas.com/parks/grsm/ https://theparkatlas.com/#fact-2026-09-10-rank-grsm Thu, 10 Sep 2026 10:00:00 GMT Great Smoky Mountains National Park had 11,527,939 visits in 2025, 3rd of 387 units that report. https://theparkatlas.com/parks/blri/ https://theparkatlas.com/#fact-2026-09-09-most-visited Wed, 09 Sep 2026 10:00:00 GMT Blue Ridge Parkway drew 16,533,753 visits in 2025, more than any other unit. https://theparkatlas.com/parks/lecl/ https://theparkatlas.com/#fact-2026-09-08-most-states Tue, 08 Sep 2026 10:00:00 GMT Lewis & Clark National Historic Trail runs through 16 states, more than any other unit. https://theparkatlas.com/states/mp/ https://theparkatlas.com/#fact-2026-09-07-state-one Mon, 07 Sep 2026 10:00:00 GMT 4 states and territories have exactly one park unit. In the Northern Mariana Islands it is American Memorial Park. https://theparkatlas.com/parks/gate/ https://theparkatlas.com/#fact-2026-09-06-rank-gate Sun, 06 Sep 2026 10:00:00 GMT Gateway National Recreation Area had 7,696,939 visits in 2025, 6th of 387 units that report.