Extremely rare opportunity to purchase the penthouse unit of one of only 7 classical, three story buildings on Russian Hill's iconic flat block of Chestnut Street. The living room views are among the best in all of San Francisco spanning bridge to bridge with Alcatraz and the Bay front and center. The Penthouse unit has never before been sold and has been meticulously maintained with elegant details including antique English Sconces, balcony gates imported from Paris and limited edition, hand blocked Zuber wallpaper commissioned by the Metropolitan Museum of New York. Refined taste is present throughout the unit, from the spacious living room with working fireplace, traditional dining room adorned with crystal chandelier, to the master bedroom, powder room and marble bathroom. The spacious floor plan includes the elegant living room featuring expansive bay views, formal dining room, chef's kitchen with Viking Range and Bosch appliances, 3 en-suite bedrooms, in unit w/d and generous storage throughout. Opportunity to develop rooftop. One large deeded parking space completes the perfect full time residence or city pied-a-terre.