Maps of the Ancient World for Students
The UNC-CH Ancient World Mapping Center brings a GIS perspective to ancient studies, and its maps for students are far better than the maps in my Penguin Classics copy of The Histories. I've downloaded the map of the Roman Empire's Northern Provinces cira 100 A.D., georeferenced it, and loaded it up as a layer available in the ZCO demo. Select the global_mosaic and rve11 layers to produce the following effect (here zoomed into the Aegean Sea):
Combine these maps with the better map interface of PrimaGIS and its support for custom annotations and one could have a rather nice annotated online atlas of the Ancient World.