Thank you for the praise, it is a very good idea to combine the technologies.
Finding the GPS Longitude and Latitude shouldn't be that hard. Most famous landmarks info can be found on Google. Otherwise grab a GPS unit and go to the site!
The method of doing the panos is not that hard once you get your head around it. Just have some nice pano "Sky's' to choose from and "blur" the horizon for a more realistic join.
Unfortunately Panoweaver cannot be used for the stitching.