The oldest national park in the world is Yellowstone National Park. When it was officially designated as a National Park in 1872, it became the first National Park in the United States.
It was also the First National Park in the World; the second oldest is Mackenzie Delta National Park, which was created in 1974.
In total, 59 countries have national parks, including Brazil and Mexico.
The United States has 59 National Parks (in total), including the newest in 2016, the National Park Service’s 100th anniversary!