I think it's great. It can help visualize what was there at one time. You could use AR at many other linotoacs for example the Library at Alexandria, the complete Colesseum in Rome, the King Dome in Seattle, WA, Mount St. Helens in WA etc.Also, it can be used to visualize what is not there yet. For example, it could show the final product of a building that has not been built yet. or it could help people visualize what it would look like if the polar ice caps melt where would the water level be.