NEW LISTING! Stunning 21st floor penthouse w/ rarely available Potomac River views. This 2,700 square foot 3BR/3BA residence offers 10 foot ceilings and floor to ceiling glass windows and doors. Unique features of this penthouse include private elevator entry, large entertaining balconies, 24hr concierge, onsite mgmt, valet parking, private 2 car garage. Legendary Turnberry Tower service.