Earth From Above
Earth From Above features spectacular arial photography by Yann Arthus-Bertrand. The main link takes you to the France section but be sure to check out the other countries with the pop-up menu in the upper left. Many of the photos have higher resolution versions offered as wallpaper.
Don't gloss over the text associated with each photo - it's well worth reading. Top Men at Wohba explored the site for hours and even learned a few things.
Thanks to Tinselman.