List of national parks of the United States - Wikipedia
https://en.wikipedia.org/wiki/List_of_national_parks_of_the_United_States
The United States has 63 national parks, which are Congressionally-designated protected areas operated by the National Park Service, an agency of the Department of the Interior. National parks are designated for their natural beauty, unique geological features, diverse ecosystems, and recreational opportunities. While legislatively all units of the National Park System are considered equal ...
DA: 7 PA: 19 MOZ Rank: 59