Commissioned by a prominent U.S. Senator, renowned architect John Carl Warnecke outdid himself by crowning the family’s six-and-a-half-acre promontory atop the Potomac River with a 10,000-square-foot haven that holds pride of place among the most elegant on McLean’s Gold Coast. Riversong invites both grand-scaled and informal entertaining and blissful solitude. The ten-bedroom house flows from a gracious foyer and firelit drawing room to a banquet-sized dining room and paneled library with stone fireplace. Glass doors open to a fountained courtyard, heated pool, and tennis court surrounded by exquisite riverfront gardens.