Google Earth uses fantastic 3D graphics technology to show real environments and three-dimensional structures and accidents to the point that in certain situations you won't know how to differentiate an aerial photograph from a virtual representation. At anytime you can change camera perspectives and even zoom in certain areas, to alternate with the Streetview system and see 360 degree pictures taken at street level, in addition to all the information provided by Maps.
Being associated with Google Maps' infrastructure you're able to superimpose all types of visualization layers, such as roads or points of interest, into the 3D view. This, together with more than 20,000 points of interest allow you to visualize in a guided way, making it the best tool for virtual tourism.
Without a doubt, Google Earth is one of the biggest landmarks of Google when it comes to providing a high-quality, accessible service to the benefit of people around the world. A way of seeing the world that you would never have imagined, and that you can now enjoy from the palm of your hand.