Interpretive signs provide a history of this property, which the U.S. Army established in 1851. Sporadically occupied, the site served as a frontier garrison—including a stint under Confederate control— and as a stagecoach and mail stop. The 9th U.S. Cavalry, a unit of the famous Buffalo Soldiers, fought Comanche and Kiowa Indian forces here in 1869. Visitors to the site can follow trails among the ruins, which include buildings, foundations and a large number of now-orphaned chimneys scattered around the 22-acre property.

Originally known as the "Post on the Clear Fork of the Brazos," Fort Phantom Hill was established by the U.S. Army in 1851 and occupied until April 4, 1854. Later, the post served as a stop on the Butterfield Overland Mail Route, a resting point on the Goodnight-Loving cattle trail, a camp for the Confederate Frontier Battalion and a sub-post for Fort Griffin. Visitors can follow trails among the ruins, which include buildings, foundations, and a large number of now-orphaned chimneys scattered around the 38-acre property. Portions of the site are wheelchair accessible, but this is a rustic site. A visitors' pavilion provides interpretive materials and restroom facilities.