We have introduced you to NSW Globe in the past, but it is well worth a revisit.
New South Wales is an Australian state. Its local government has made available, via a Google Earth KML file found on this site, a wealth of information. The most recent addition is property price and sale information for the whole state.
The popup includes links to property sales information from the last five years for the property in question or for the street or suburb.
Most interesting is how all the data is served. We believe that they are using Google Earth Enterprise. Note that the KML file does not open in ‘Places’ but rather in the ‘Layers’ section. We have seen this before with links from the Google Maps Gallery. One of the side effects of this is that you cannot save it for later, so you have to reopen the downloaded KML file every time you want to view the data. It also stops you from downloading all the data locally and sharing it – a form of copy protection.
The imagery loads smoothly as if it is just another Google Earth layer. Also interesting is that it comes with its own terrain model (as a selectable layer) that is slightly different from Google Earth’s built in terrain. From what we could tell by looking around Sydney, Google Earth’s terrain model is higher resolution.