Piatt's Mill is a historic gristmill located in Piatt County, Illinois. Built in the mid-19th century, it was used for grinding grain into flour and cornmeal, serving the local farming community. The mill features a waterwheel that harnesses the power of the nearby stream, showcasing traditional milling techniques of the time. Today, Piatt's Mill is preserved as a historical site, allowing visitors to explore its architecture and learn about the milling process. It is part of the Piatt County Historical Society and often hosts educational events, making it a valuable resource for understanding local history and agriculture.