Although Congress set aside Yellowstone National Park in 1872, there was no real system of national parks until a federal bureau, the National Park Service, was created on August 25, 1916 to manage those areas then assigned to the U.S.
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.
It is the site of the Lincoln Assassination.
In the United States, 58.
The Department of the Interior.
Mammoth Cave National Park is near Brownsville, Kentucky It is the only national Park in Kentucky
St Louis Gateway Arch
Yellowstone National Park was established in 1872, by an Act signed by President Ulysses S. Grant, as the first national park in the US and possibly the world. The National Park System was created by an Act signed by President Woodrow Wilson on August 25, 1916. The Act, known as the Organic Act, placed all the existing parks under the management of the National Park Service.