The crown jewel of San Francisco's skyline, 999 Green Street's spectacular penthouse apartments afford panoramic views from The Summit's glass-encased tower. Designed by famed developer, Joseph Eichler, and owned by San Francisco's most beloved couple George Shultz and Charlotte Maillard Shultz, both North and South-facing penthouses evoke a statement-making sense of grandeur with floor-to-ceiling glass and grand staircases that link two lavish levels. Sold together or separately, these one-of-a-kind penthouses have come to the market just twice since inception in 1973. Set within a full-service, luxury skyrise with 24-hour doorman, and located in prime Russian Hill near hip cafes and eateries, penthouse living includes deeded parking and extra storage. Thoughtfully designed with shared common areas, including two connecting hallways and on-floor storage, both North and South towers have the capacity to operate independently or together as one.