Bing’s first Theme Pack was so popular that Bing decided to release Bing’s Best 2 Theme Pack – a new collection of desktop backgrounds for Windows 7.
“From the jagged peaks of the Andes in South America to Arizona's Vermilion Cliffs, this sequel to the popular Bing's Best theme takes your Windows 7 desktop on a trip around the world.”
Or you can get it from Personalize from your PC > Get more themes online
In this collection there are 21 images which were featured on Bing.com Homepage. (Size 19.5MB).
To get this and the earlier released “Bing’s Best” theme pack and other, go here