Sketches from Alexandria’s Past, in 1760 and the 18th July 15, 2015October 7, 2015Aletha Golas Alexandria 18th century at Point Lumley at South End of Crescent Bay The Alexandria harbor, when the waterfront was still cove-shaped and the homes along Fairfax St. were 25 to 30 feet above the sandy beach (at today's Lee Street) and Potomac River.