The Globe Link Import and Export features use Google Earth KML or KMZ (zipped KML) files to link Revit with Google Earth.
Import Google Earth File (KML/KMZ)
The Import feature imports site information from Google Earth KML or KMZ files into Revit as the background for building model layout.
Export Google Earth File (KML/KMZ)
The Export feature exports the Revit building model, and other information. It is then saved as Google Earth KML or KMZ files.