I am usually a Google girl, but in some things Microsoft's Live Search has the best functionality. Their image search is one case in point. I especially like their option to search by photo or illustration, which comes in handy for certain searches.
As an example, I am running here a search for Oakland +"Lake Merritt". Live search returns the following at the top of its search results:
The power in Live Search's panel is on the right-hand side, where you can use various criteria to modify and refine your search. The option to view solely photos or illustrations is located here:
In selecting "Illustrations" the search returns adjust accordingly:
Note that among the returns are maps for the area in which I am searching. Very handy! You can try it our yourself at live.com.