MARY'S COUNTY MUSEUM DIVISION Piney Point Lighthouse was built in 1836 and was the first lighthouse on the Potomac River. With its large Fresnel lens, the light was visible from about 11 miles away.

Built in 1830 by contractor John Donahoo, who constructed 11 other Maryland lighthouses, including Turkey Point and Piney Point, the Point Lookout Lighthouse was expanded in 1883 to two stories ...