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. In this wonderful aerial viewer initially developed by the company 'Keyhole' you can walk around the planet through images taken by satellite and adorned by the company's inabarcable geolocated database. Google Earth is one of the most ambitious developments by Google.
