Alexandria, Virginia, is a city on the Potomac River, just south of Washington, DC. It’s known for its Old Town, with brick sidewalks and well-preserved 18th- and 19th-century buildings. King Street is lined with boutiques and specialty shops. Founding fathers dined at Gadsby’s Tavern, now a museum with period objects and photographs. Carlyle House Historic Park is a restored Georgian mansion with a garden.