Alexandria, Virginia, is a well-known city on the Potomac River, south of Washington, DC with rich history and its famous Old Town, with brick sidewalks and well-preserved 18th- and 19th-century buildings. Some of the most significant landmarks include George Washington’s Estate in Mount Vernon, George Mason’s Gunston Hall, and George Washington Masonic National Memorial. Alexandria’s real estate market is one of the most dynamic in the nation.