The Seven Foot Knoll Lighthouse was originally completed in the Chesapeake Bay in 1856 to mark the entrance to the Patapsco River, an important trade route into Baltimore, Maryland. Unlike most screwpile lighthouses, the house was cast iron rather than wood. The first screwpile lighthouse was built at Brandywine Shoal, Delaware, in 1850. They soon… Continue reading Seven Foot Knoll Lighthouse