The second, Vertigo, gives visitors the sensation of tip-toeing across girders in the sky as the tower is built. Whereas the Slide uses an Oculus Rift headset, for the Vertigo experience guests don a different device, HTC Vive, and have sensors strapped to their legs. This allows staff to track visitors as they “walk” around the virtual construction site. Both experiences trick guests by blowing fresh air at them.