Google Earth is a virtual globe program that was originally called Earth Viewer and was created by Keyhole, Inc. It maps the earth by the superimposition of images obtained from satellite imagery, aerial photography and GIS over a 3D globe.

From popular destinations like Maui and Paris to local restaurants and schools, Google Earth puts a wealth of Earth imagery and other geographic information right on your desktop. See satellite images of your childhood home or read articles from Wikipedia. Google Earth is free for personal use. No registration is required.
 

Google Earth Features

• Fly to your house. Just type in an address, press Search, and you’ll zoom right in.  
• Search for schools, parks, restaurants, and hotels. Get driving directions.
• Tilt and rotate the view to see 3D terrain and buildings.
• Save and share your searches and favorites.