Apple may draw on one of the world's most famous architects to design its new campus on HP's old headquarters, a new rumor may have revealed. Spanish paper El Economista claims that Norman Foster, best known for curving architecture like London's iconic "Gherkin" tower and the Reichstag dome in Berlin, would design a building to house engineering and research teams on the newly acquired 98-acre plot. It would use "cutting-edge" materials and have a green slant with renewable resources used throughout.