Google Earth takes satellite imagery and combines it with the ability to tilt, zoom, search, create driving directions, measure distances, and show some buildings in 3D with textures to create a realistic 3D model of the earth. They also allow you to load in sophisticated overlays like terrain, roads, borders, airports, etc. Google Earth also allows you to insert content from other sources, allowing other people like
Wikimapia to
insert their data into Google Earth.
