The National Park Service (NPS) is the United States Federal Government agency that deals with all National Parks, many National Monuments, and other conservation properties with various designations. It was created on August 25, 1916 by Congress in order to "conserve the scenery and the natural and historic objects and the wild life therein and to provide for the enjoyment of the same in such manner and by such means as will leave them unimpaired for the enjoyment of future generations." It is a branch of the United States Department of the Interior, which is in turn an arm of the executive branch. The NPS oversees 380 units, of which 56 are designated national parks. Other units are designated national monuments, historical parks, memorials, historic trails, recreation areas, wild and scenic rivers, lakeshores, seashores, and battlefields. The U.S. Park Police are the law enforcement division of the National Park Service, with jurisdiction in all NPS sites.

The National Park system of the United States encompasses approximately 83.6 million acres (338,000 km²), of which more than 4.3 million acres (17,000 km²) remain in private ownership. The largest park is Wrangell-St. Elias National Park and Preserve, Alaska. At 13,200,000 acres (53,000 km²) it is over 16 percent of the entire system. The smallest unit in the system is Thaddeus Kosciuszko National Memorial , Pennsylvania, at 0.02 of an acre (80 m²).

See also

• List of U.S. National Parks
• U.S. National Monument

External links

• National Park Service official site
• NPS nomenclature for designating protected sites and areas
• NPS public domain digital image archive
• National Parks Pictures