Sotheby's International Realty is pleased to present a once-in-a-lifetime opportunity to live within San Francisco's most visible and historic clocktower. Perched high above South Park, a burgeoning epicenter of industry and technology that embodies San Francisco's South of Market neighborhood, the Clock Tower Penthouse is on the open market for the first time since being offered to the public nearly a quarter century ago. Owning this amazing penthouse also comes with use of the top three adjoining levels, including the interior of the famous tower and the Clock Room itself, plus an enormous wrap around view deck.