Surprisingly, there seem to be as many hobby skydivers training in this vertical wind tunnel as there are curious out-of-towners. Visitors are strapped into jumpsuits and given a short training session on how to walk over the netting into the 125mph airflow—mastering the necessary arched-back, splay-legged posture can be tricky, but should you fail, there's a master diver with you to grab you by the sleeve and guide you into a series of adrenaline-fueled climbs and plunges. Or not—you can just hover there, if that’s what floats your butt.