555 California Street (Bank of America Center)

555 California Street is a 52-story granite-clad skyscraper that opened in 1969 as the Bank of America Center and was the tallest building in San Francisco upon its completion. The building is noted for its dark, polished granite exterior and strong presence on the Financial District skyline. It has housed major financial firms and corporate offices and remains a prominent example of late-1960s corporate modernism in the city.