World of Greyhawk

This is my favorite Dungeons & Dragons campaign setting, probably because it was one of the first that I encountered, and it closely associated with my favorite modules of the time. The maps for this set are excellent - hand drawn with quite a bit of detail. There is enough detail to the area to help a DM to develop their own campaign, but not too much to overwhelm. I really like reading through the different country descriptions and the discussions of how they interact with their neighbors. I am looking forward to setting future adventures/campaigns in this setting again.