The National Park System of the United States is the collection of physical properties owned or administered by the National Park Service. This includes all areas designated National Parks and most National Monuments, as well as several other types of protected areas of the United States.

As of 2007, there are 391 "units" of the National Park System. However, this number is somewhat misleading. For example: Denali National Park and Preserve is counted as two units, whereas Fort Moultrie National Monument is not counted as a unit because it is considered a feature of Fort Sumter National Monument.

In addition to areas of the National Park System, the National Park Service also provides technical and financial assistance to several "affiliated areas" authorized by Congress. Affiliated areas are marked on the lists below.

The National Register of Historic Places is administered by the Park Service (with nearly 79,000 entries) and automatically includes all National Park System areas designated due to their historic significance. This includes all National Historical Parks/Historic Sites, National Battlefields/Military Parks, National Memorials, and some National Monuments.

Delaware is the only state without a unit of the park system. Units are also found in Washington, D.C., Guam, American Samoa, the U.S. Virgin Islands, and Puerto Rico.

Nearly all units managed by the National Park Service participate in the National Park Passport Stamps program.

[edit] National Parks

National Parks of the U.S.

Yellowstone National Park, Wyoming

North Cascades National Park, Washington

Shenandoah National Park, Virginia

Great Smoky Mountains National Park, North Carolina / Tennessee

Arches National Park, Utah

Everglades National Park, Florida

As of 2006, there are 58 officially-designated National Parks in the United States and its dependent areas.

• See also:
  • United States National Park
  • List of United States National Parks by state
  • List of United States national parks by date established

[edit] Disbanded National Parks

[edit] National Monuments

Devils Tower National Monument, Wyoming

Statue of Liberty National Monument, New York

Natural Bridges National Monument, Utah

• See also:
  • U.S. National Monument
  • List of National Monuments of the United States (includes units not administered by the NPS)

[edit] Decommissioned National Monuments

[edit] National Preserves

Little River Canyon National Preserve

[edit] National Historical Parks

Independence National Historical Park