50 California Street is tied as the 34th-tallest building in the Bay Area planned or built. The 1972-built tower in San Francisco’s Financial District shares the same height as 555 Mission Street, 487 feet above street level. Originally known as the Union Bank Building, its distinctively ubiquitous modernist design from the Welton Becket architecture firm was part of a larger moment in the city’s development history of rapid economic growth and local anxieties about the ‘Manhattanization’ of the West Coast metropolis.