With a spiral stair, the air above the headroom usually just becomes deadspace. Check out how the architects, .PSLAB, put it to excellent use, not only mimicking the form of the stair, but providing a practical application as well. Too often something this visually striking winds up being what my old professor, Billy Feuerman used to (probably still does,) call “voila! architecture,” meaning something really cool looking that’s just tacked on for the sake of looking cool. We’re always excited to see “cool” being put to work.