Nice,

I like the clean lines in this map, particularly those on the castle. What program/software did you use to create this?

It all looks really good. Here are a few suggestions though.

In terms of placement of districts, I find it odd that the industrial and warehouse districts are on opposite ends of the city. Wouldn't it make more sense if the warehouse, industrial, market, and docks were all clustered in the same area? Then of course the thieve's district would be close by these as well.

V~