List of national parks of the United States National parks National parks

| Name_ | Location_ | Date_established | Area | Description_ |
|---|---|---|---|---|
| Olympic | Washington , 47°58′N 123°30′W﻿ / ﻿47.97°N 123.50°W | June 29, 1938 | 922,650.86 acres (3,733.8 km2) | Situated on the Olympic Peninsula, this park ranges from Pacific shoreline with tide pools to temperate rainforests to Mount Olympus. The glaciated Olympic Mountains overlook the Hoh Rain Forest and Quinault Rain Forest, the wettest area of the continental United States. |
| Petrified Forest | Arizona , 35°04′N 109°47′W﻿ / ﻿35.07°N 109.78°W | December 9, 1962 | 93,532.57 acres (378.5 km2) | This portion of the Chinle Formation has a great concentration of 225-million-year-old petrified wood. The surrounding region, the Painted Desert, has eroded red-hued volcanic rock called bentonite. There are also dinosaur fossils and over 350 Native American sites. |
| Pinnacles | California , 36°29′N 121°10′W﻿ / ﻿36.48°N 121.16°W | January 10, 2013 | 26,605.73 acres (107.7 km2) | Known for the namesake eroded leftovers of half of an extinct volcano, it is popular for its rock climbing. |