Hagley Museum, the site of the first DuPont black powder works along Delaware’s Brandywine River. In the powder yard stone mills and storehouses were operated by water power. Upstream sits Eleutherian, the home built by E.I. DuPont in 1803 and home to five generations of DuPonts. On the grounds are the carriage house, and a formal French garden that produced food for the DuPont family and the worker’s family members,
The mill closed in 1921.