The Crown Zellerbach Headquarters Building (also known now as One Bush Plaza) was built in 1959 at the corner of Bush and Market Streets in San Francisco’s Financial District. It was the first significant structure built in downtown San Francisco since the start of the Great Depression. The 19-Story office building designed by Skidmore, Owings & Merrill was the first International Style building built in San Francisco and one of the first in the U.S. It was innovative at the time for its use of horizontal steel girders stretched across the entire width of the building, eliminating the need for interior supports. It also featured one of San Francisco's first glass curtain wall towers, which are now ubiquitous in high rise towers all over the world.
It is now San Francisco Landmark #183.
I walk pass this building often and marvel at its graceful architecture and the way other buildings reflect off its facade.