Want an extra-large version of the cover? You can find that here.
Though it lacks labels, this is the map of London Rhys Davies created for the novel. (You can find a full-size version here.)
I’m pleased to share, with permission, a piece of fan art from a reader:
You can also view a selection of photos from my research trip on Flickr.
As for castings, I imagine Lune as Olivia Wilde. (I don’t have a casting for Galen or Irrith.)