I can at least post a few glimpses of some of the things I had to look up in order to write the mysterious, unnamed novel. One is a picture of a municipal courthouse in a medium sized city. One is a picture of a public health complex in the same city. One is a chart of all of the glaciers in Norway. What do they all have in common? I can't say. You can't say either.
But once again I have to wonder aloud at how any fiction writing was ever done before the internet in general and Google's image search in particular.