Oklahoma National Park Units

Name

Classification

Date*

Hectares

Acres

Features

Chickasaw	National Recreation Area	1902	4,002	9,889	Partially forested, rolling hills; mineral springs, streams, and lakes
Fort Smith	National Historic Site	1961	30	75	Early U.S. military post in the Louisiana Territory; established to monitor various Native American peoples (Also in Arkansas)
Oklahoma City	National Memorial	1997	2.5	6.2	Memorial on the site of the 1995 terrorist bombing at the Alfred P. Murrah federal building
Washita Battlefield	National Historic Site	1965	127	315	Site of a major battle between several Plains tribes and the U.S. Army in 1868
* Earliest date of federal government involvement with the area.