stone-faced scarp walls of the bastions were also pierced with loopholes for rifle fire, which are of varying design, reflecting the preferences of the different engineers overseeing the construction. Originally, a ravelin protected the side of the fort facing Lake Ontario and mounted further heavy guns. The current layout of the fort includes Officer Quarters #1, the Powder Magazine, the Enlisted Men's Barracks, the Storehouse, and Officer Quarters #2. There are also two guardhouses by the entrance of the tunnel to the main entrance. See also List of New York State Historic Sites References Graymont, Barbara, The Iroquois in the American Revolution, 1972, External links Historic Fort Ontario Fort Ontario State Historic Site, official site Friends of Fort Ontario Ontario Ontario Ontario New York (state) historic sites Museums in Oswego County, New York Military and war museums in New York (state) Living museums in New York (state) Ontario Ontario Jewish-American history Oswego, New York Ontario National Register of Historic Places in Oswego County, New York American Revolution on the National Register of Historic Places Military history of the Great Lakes