You can access it with a little trick.
- Go to the picture, which you want to download.
- Right-click on the website and choose View Source.
- You now see the source-code of the website.
- Than use Ctrl+F. Now a search field appears.
Type in the following:
background-image
Now you see the highlighted part in the source-code. Behind this
background-image
you see theurl
to the photo. For example:background-image:url(/az/hprichbg/rb/PalaceofFineArts_ROW11000533273_1366x768.jpg)
Now just add this part-url to the normal bing-url.
http://www.bing.com/az/hprichbg/rb/BonavistaPeninsula_ROW8180731473_1366x768.jpg
As you see, I've added the url from the image right behind the bing.com-url.
Now you can download the image by right-clicking and downloading it.