The parks of the United States National Park system are one type of protected area in the United States and are operated by the National Park Service. Yellowstone National Park was the first national park in the world. 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. ... Yellowstone National Park is a U.S. National Park located in the states of Idaho, Montana, and Wyoming. ... Yosemite National Park in the United States. ...

Nearly all US National Parks participate in the National park passport stamps program. At nearly all of the 388 American National Park units, one or more cancellation stamps can be acquired. ...

See also

• List of U.S. national parks

All United States parks designated National Parks and most National Monuments are maintained by the National Park Service of the United States which also maintains several other types of protected areas of the United States: // National Parks As of 2005, there are 58 officially-designated National Parks in the United...

External link

• A Brief History of the National Park Service