Koalas, crocodiles, cockatoos are just some of the natural wonders that come straight to your desktop in this free Windows 7 theme, a sequel to the popular Best of Bing: Australia
This theme is having 15 beautiful Australia wallpapers
Get breathtaking views of the United States delivered to your desktop with this free Windows 7 theme that captures the best of Bing Maps aerial photography. Once downloaded, this dynamic theme updates automatically through an RSS feed.
If you want to create your own Windows 7 Theme with wallpapers from dynamic Rss feed , you can check this post where you can download a windows 7 theme Flowers and also can check how you can create one.
Also you can download another Bing Windows 7 theme that updates automatically through an RSS feed
Send your desktop to the furthest reaches of the universe with these fantastic photorealistic images of distant planets and outer space events by GTGraphics in this free Windows 7 theme.
This theme have 16 beautiful wallpapers