I suggest choosing a region who's history interests you, and then selecting a timeperiod. let it be noted that from about 400 AD to 1000 AD, it's almost impossible to find fully detailed reference maps.
I am thinking of creating a new map, need ideas: 2015-09-03 00:56:22
The play-ability of these maps needs to be considered as well. Gaul, the World in the year 950 and the Old World all fit this, but something like the Empire of Charles V or the Napoleonic Empire may not be so good when, at least for diplomacy games, which is normally what historical maps are used for.
I am thinking of creating a new map, need ideas: 2015-09-04 20:39:28