Url: http://earth.google.com/
Google Earth is available for download again! Get it before they stop allowing downloads. It allows you to browse the earth, including elevations, some city skyline blocks, historical weather etc.
This work by Shawn Wildermuth is
licensed under a
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License
. Based on a work at wildermuth.com.