America's first national park was signed into existence by President Ulysses S. Grant in 1872. In thirty years, there were only four more such designated parks. When Theodore Roosevelt took on the mantle of the Presidency, the pump was primed for more national parks.
As president, Roosevelt created five national parks (doubling the previously existing number); signed the landmark Antiquities Act and used its special provisions to unilaterally create 18 national monuments, including the Grand Canyon; set aside 51 federal bird sanctuaries, four national game refuges, and more than ...
The smallest park is Gateway Arch National Park, Missouri, at 192.83 acres (0.7804 km2). The total area protected by national parks is approximately 52.4 million acres (212,000 km2), for an average of 833 thousand acres (3,370 km2) but a median of only 220 thousand acres (890 km2).
Theodore Roosevelt National Park is an American national park of the badlands in western North Dakota comprising three geographically separated areas. Honoring U.S. President Theodore Roosevelt, it is the only American national park named directly after a single person.
During his very active presidency, Theodore Roosevelt established approximately 230 million acres of public lands between 1901 and 1909, including 150 national forests, the first 55 federal bird reservation and game preserves, 5 national parks, and the first 18 national monuments.
Many mistakenly think America's Yellowstone National Park is the oldest in the world but there's one that was created a century earlier. Established by the Mongolian government in 1778, the area surrounding Bogd Khan Uul Biosphere Reserve is actually the oldest in the world.
The artist George Catlin first articulated the idea of large western national parks in 1832, the same year Congress set aside the Hot Springs Reservation in central Arkansas, now known as Hot Springs National Park.
Roosevelt went on to strengthen the protections of public lands, campaigning on conservation for the Vice Presidency in 1900 and later as President, establishing the National Parks system that currently protects not just Yellowstone, but 85 million total acres of American lands.