User blog comment:Essie Essex/Interactive Dunwall Map/@comment-1500935-20151212223611/@comment-1500935-20151213094421

@DrTeaTime

I noticed that too, and I'm sure the Distillery District map eventually replaced the Legal District during development, hence why the background (and even the lighting during House of Pleasure) are the same. They even kept the scene of guards dropping bodies into the river/on a boat. But still, if you go with the background, both maps are in the same exact spot. With that in perspective, the only place the Legal District could be is East from the Distillery District.

@PikovajaDama

Indeed, but I have a feeling that was an unintentional leftover by the developers. The Distillery District being some sort of hub for the second and third missions was a late idea. We can see in an old screenshot that the Golden Cat was once directly accessed by boat.