Detailed photographic maps at rllmuk forums here. The author has even given names to the major landmarks but I am not aware that these names are in common use.
Simplified schematic maps at nextgenboards available here.
I have a terrible innate sense of direction but I am actually a very good navigator once I have a map in front of me or in my head. I never get lost in a US city with square blocks but I quickly become disoriented in European cities with winding streets and "blocks" that have other than four corners. In gaming this has meant that I am completely incapable of learning the maps by just playing through them. I need to see a picture.