The third tallest building proposed or built, and the second tower building standing in the Bay Area, is the Transamerica Pyramid, the defining icon for the San Francisco skyline since its completion in 1972. With a rooftop height of 853 feet tall, the pyramid would not be surpassed in height until 2018 with the completion of the Salesforce Tower. William L. Pereira & Associates is responsible for the design.
William L. Pereira & Associates
One Sansome Street ranks as the 22nd tallest skyscraper in the Bay Area, planned or built. With a rooftop height 551 feet above street level, the structure is host to over half a million square feet of office space available in the Financial District since it opened in 1984. William L. Pereira & Associates, best remembered for designing the Transamerica Pyramid, was the architecture firm behind One Sansome.