This census-designated place first settled in 1623 is home to a defensive fortification built at the mouth of what river?
Fort McClary Fort McClary is a former defensive fortification of the United States military located along the southern coast of Maine at Kittery Point. Built at the mouth of the Piscataqua River, it was used primarily throughout the 19th century to protect approaches to the harbor of Portsmouth, New Hampshire, and the U.S. naval shipyard.
Fort Algernon Fort Algernon (also spelled Fort Algernourne) was established in the fall of 1609 at the mouth of Hampton Roads at Point Comfort in the Virginia Colony. A strategic point for guarding the shipping channel leading from the Chesapeake Bay, Fort Monroe was built there beginning in the 1830s. The area is now known as Old Point Comfort. Long part of Elizabeth City County, the site is now located in the independent city of Hampton, Virginia.