Daily Windows Wallpaper by Bing
Microsoft offers an official way to set Bing homepage photos as your desktop background.
Every day the program will automatically get a new high-resolution image and set it as desktop wallpaper.
Download Bing Wallpaper, run and install. The program will automatically download and install a new desktop wallpaper.
To change the wallpaper, find the Bing icon on the taskbar, click on it and select “Change Wallpaper”. You can quickly scroll through several available wallpapers.
The same window contains information about the photo. For example, what kind of animal is it or where the landscape was photographed.