Which tech company's headquarters was specifically designed as a 'spaceship' with a circular design, and became part of their brand identity before it was even completed?

In today's competitive market, iconic corporate headquarters have become powerful marketing tools for major brands. These architectural marvels serve as physical manifestations of company values and brand identity, often becoming tourist attractions and symbols of innovation. Test your knowledge about these famous architectural statements and how they've shaped public perception of major brands.

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Apple Park in Cupertino, California
Amazon Spheres in Seattle, Washington
Google's Googleplex in Mountain View, California
Microsoft Campus in Redmond, Washington