As mentioned here before, Google Earth allows you to import 3D models and place them where appropriate. If you look at some of the sightseeing web sites listed in my reference section, you are sure to find a number of interesting 3D models. This is yet another way to help make your experience in Google Earth seem more real.
My two favorite 3D models are the Golden Gate Bridge 
in San Francisco, and the Statue of Liberty in New York City. Others I’ve seen done are the Eiffel Tower in France, the US National Monument, St. Louis Arch, the Pyramids in Egypt, and Stonehenge. See if you can find some interesting ones by going to some of the sightseeing sites I’ve listed in the reference section.
