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In page Herbert Bayer:

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Overseeing acquisitions for ARCO Plaza, the newly built (1972) twin 51-story office towers in Los Angeles that served as the new company's corporate headquarters, Bayer was also responsible for the ARCO logo and designing all corporate branding related to the company. Prior to the completion of ARCO Plaza, Anderson commissioned Bayer to design a monumental sculpture-fountain to be installed between the dark green granite towers. Originally titled "Stairway to Nowhere" Anderson laughed[citation needed], but felt the Shareholders wouldn't see the irony; thus he suggested it be named Double Ascension and it still stands between the twin skyscrapers today.