The Hall of High Cloud was the section of the Knights Academy in Sanctaphrax where Lower Halls Squires learned about the weather and Great Storms. The lecture hall was an enormous sphere of glass panes carved with intricate calculations, weather patterns, and guidelines, and those in attendance would sit on buoyant benches floating around the hall. Anyone giving a speech would stand at a buoyant podium hovering in the very center of the room. This setup was designed to maximize the acoustic effects of the hall, so that the tiniest whispers could carry audibly. The Hall Master of High Cloud during the Quint trilogy was Hax Vostillix. It was designed by the architect Flux Cartius and it was his most famous building.