“As far as visuals go, the coolest design is, without much doubt, the project by Gisela Baurmann, Sawad Brooks, and Jonas Coersmeier, all three of whom live in New York. The center of their design is something called the Memorial Cloud, a field of tubes that is flat and see-through on the top, at street level, and has an undulating ceiling, one whose shapes recall church architecture, when seen from underneath. The tubes are lit dramatically from below: one beam for each victim.”