Real maps, even. My SCA barony has an event going on in a few weeks, and I get to be the guy who tells people where to put their tents and so forth (they’ve figured out that I effectively work from home these days). But to do that, you need maps. With grids! And little scales.
…I have to say: when I was writing MORGAN BAROD I leaned a hell of a lot on Google Maps. Trying to remember where everything in Monmouth County was after being away for twenty years was surprisingly difficult. Not that I was all that aware of my location before then, either.