http://www.world-heritage-tour.org/
I found this site to be quite fascinating. They are creating panographs of UNESCO world Heritage and posting these to this site. The intent is to make it possible for those who are disabled or otherwise cannot make the trip to visit and experience something of the sites. There are even a couple of Caves....There are a couple of nice panographs of the entrance areas around St. Pauls Cave in the Phillipines. You have to register...and if you have a slow connection; it will not be a pleasant experience waiting for it to download. But with DSL or a cable modem....they download very well.