The $70,000,000 penthouse is one of the largest and most luxurious properties outside of Manhattan, the Museum Tower Penthouse atop the Five-Star St. Regis Residences in San Francisco, this one-of-a-kind, palatial penthouse features over 20,000 expansive square feet, including 2,900 square feet of terraces – one of the largest personal residences in all of San Francisco. Created by international award-winning interior design firm Orlando Diaz-Azcuy Design Associates, this exquisite two-story, grand penthouse designed for city living boasts floor-to-ceiling glass walls soaring 22 feet and incomparable 360-degree views of many San Francisco landmarks.