Peirce Mill (historic grist mill in Rock Creek Park)

Peirce Mill is a stone grist mill built in 1829 located in Rock Creek Park and is one of the park's surviving examples of early-19th-century industrial architecture. The two-story rubble stone structure originally operated with water-powered grinding machinery and has been preserved and stabilized by the National Park Service. Interpreted as a historic mill, it illustrates agricultural and early industrial technology once common in the region.