Bing has revamped its image search to provide sharper photos, and make more of a show of related searches. There are several options for filtering results, and Bing is strong in offering suggestions for related searches. The source of the image isn’t obvious at first glance – open the image and look to the bottom of the page to see the url.

Bing’s image search results
Click on an image to get more suggestions, similar images, and the url and reference to the source.

If you click on “Show Larger”, there is a slide-show treatment – wonderful for viewing photos of birds, flowers, and all things beautiful.
See Bing Updates Image Design Again: Dim Background, Faster Load Speed & More by Barry Shwartz, Search Engine Land (Dec 18) for specifics and screenshots of what Bing Image Search used to be.