It is thought by many to be the best idea the US has ever had.
George Caitlin
He never created the national park system!
President Ulysses S. Grant signed the bill creating Yellowstone as the world's first national park in 1872. The National Park Service was created in 1916 during the Woodrow Wilson administration.
In terms of acreage, it is Wrangell-St. Elias National Park & Preserve.
Gulf Islands National Park Reserve
Hot Springs National Park in Arkansas Smallest - Thaddeus Kosciuszko National Memorial, PA - 0.02
Both Kobuk Valley National Park and Gates of the Arctic National Park in Alaska are more northerly. Denali National Park is the most northerly US National Park connected to the continental road system.
The major jungles in Nicaragua are Bosawás Biosphere Reserve, Indio Maíz Biological Reserve, and San Juan del Sur Reserve. These areas are known for their rich biodiversity and tropical rainforest ecosystems.
It is the site of the Lincoln Assassination.
Grand Canyon National Park.
In the United States, 58.
The Department of the Interior.