How about a map based on 4 old Scott Adams (msadams.com) adventure
games? Each adventure game would be a region (continent) and each
continent would have territories named after the rooms in that
adventure game (w/ some artistic license of course). The 4 games I
suggest (because I played them to death back in the 80s):
% Voodoo Castle
% The Count
% Adventureland
% Pirate Adventure