Fairfax County, US
Colvin Run Mill is in Great Falls, Virginia. Built c. 1811, Colvin Run Mill is the sole surviving operational 19th-century water-powered mill in the Washington, D.C. metropolitan area, and its restored mechanism is a nationally significant example of automated technologies pioneered in milling and l
ater adopted across American industry.
Listen to the audio guide for Colvin Run Mill Free on WIP — starts by itself when you arrive, even with the screen off