Katherine Keenum

The Sverresborg Trøndelag Folkemuseum website has several items that could be helpful in conjuring up the setting for a fantasy or historical novel, including this visualization by K. P. Keller (about whom I could find nothing else on line).
 
I adore the way artists can translate archeological remains from holes in the ground into fully imagined places. Just look at the sweep of the bay in the background of this one, the texture of tiled roofs, the plowed field under the bluff on the right, the rockiness of the mound on which the castle is set. All these and more could supply either touches of realism or odd hinges for a plot point. For a good article on how it's done, click here.