Hex based maps out there?

[RedRover]

I have always been partial to the World of Greyhawk map.

Dungeon magazine (current issue #116) will, over the next few issues, be presenting a new large Version of the World of Greyhawk map as a series of four poster-sized maps (issues #117-120).

That aside, lots of board wargames use hex maps. One source is Strategy & Tactics magazine, by Decision Games (see here).

Each issue has an historical game, and many of these have hex maps.