In one case, a series of seasonal panoramas is made available, turning the user’s mobile display into a “magic lens” that transforms the environment around the user, allowing them to experience that location from two seasons at once (the real and the virtual) as illustrated in Figure 2. In a second use case, the user is given the opportunity to view a video of a historically high flood within the park, overlaid upon a panorama of the location where the video was originally recorded. Current generation tracking technology limits the accuracy of AR content registration over a device’s see-through video. To correct this, a panorama is used as a proxy for see-through video, allowing accurate registration between the foreground video and the background panorama. A third use case for on-location panorama viewing in the AR trail guide application transports visitors into the center of a ruin site that is often only visible from afar, as the interior of these ruins is usually off-limits to visitors.