User blog comment:Essie Essex/Interactive Dunwall Map/@comment-1500935-20151212223611/@comment-1500935-20151213110328

Ok, just found this: there's an image of the Legal District Waterfront map in the background of the Golden Cat. It's hard to tell at first sight, but you can see the suspended rails, the large guard house/post and the cranes by the docks. File:Detail Golden Cat Background.jpg

However, since it is repeated twice in the same background, it seems to be just an image fodder.