Tha's only for buildings that are part of the official 3D Layer in GE. Whatever you load from anywhere else is not clickable. Even other "official" layers like the Rome Reborn project (if you run the English version of GE, you can find it in the Gallery). They need to add a "placemmark" hovering above the 3D building to be clickable. See an example here with added 3D text label (not clickable - and it could be a bit bigger, too) and a "placemark" added above the model (cca. 11 metres above so it will "float" atop - but that IS clickable). [image: IewZ_GE-example.jpg]