One Maritime Plaza, Steel skyscraper in Maritime Plaza, San Francisco, US
One Maritime Plaza is a 25-story office tower standing 121 m tall, completed in 1967 on Clay and Front Streets. Its facade pairs dark blue glass panels with thick grey steel beams forming large X-shapes across the front, an early use of external trusses and X-braces for seismic bracing. Trees stand in front of its lower section.
The building was completed in 1967 by the renowned architecture firm Skidmore, Owings & Merrill and was originally known as the Alcoa Building. It arose as part of a larger development project in this area of the city.
The tower takes its name from Maritime Plaza, the elevated public park finished in 1967 that surrounds it. The park sits above Clay and Front Streets, and Google leased 190,000 sq ft of the building in December 2018.
The building connects to nearby complexes through elevated pedestrian walkways, making it easy to explore surrounding areas. Access to shops and restaurants at lower levels makes it convenient to spend time and eat in the vicinity.
One Maritime Plaza was among the first tall buildings to use external trusses and X-braces as seismic bracing, a system visible on the facade as thick grey steel beams crossing in large X-shapes over dark blue glass. The tower was built as the Alcoa Building for Alcoa Corporation and completed in 1967.
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