Geometry has long provided a springboard for type and letterform experiments. Ed Wright's 1968 lettering for the Metropolitan Police New Scotland Yard building in London shows considerably greater verve than most. The letters on this three-sided spinning sign are made from polished stainless steel and sit proud of the background. This simple movement adds life and (literally) sparkle to an otherwise dull building. Since this photo was taken (April 1999) the lettering has been removed from one face and replaced with a Metropolitan Police crest: not an improvement.