What factors needed to be considered?

Norman Foster's 'Gherkin' is one of London’s most recognisable landmarks, a bold, award-winning architectural statement rooted in a radical approach. Inside, however, it’s an exercise in restraint, with subdued grey tones and neutral finishes. The information graphics needed to reflect this understatement, to be useful without being conspicuous. Swiss Re occupy floors 2-15 of the building.