I used to do things like this when I was a kid (less extreme, never more than a single sheet of paper), where I would create some natural features: a lake shore or river, maybe a freeway or two or a railroad and then start platting out a subdivision in the open spaces. It was a delightfully meditative practice and maybe I should start doing it again.
Not the person you replied to, but like them, I too liked to draw imaginary maps when I was a kid, mainly of medieval towns. I also tend to like the world-building aspects of strategy games, arguably more than the actual strategy parts.
Cities: Skylines have been in my wishlist since shortly after it came out but I never got around to playing it until about a month ago, and... didn't like it at all. It felt too "micro-manage-y" (for the lack of a better word) while also having the pressure of the ticking time.
Needless to say, I was very disappointed after looking forward to it for ~10 years.
I actually had the same experience as you (own it, played it only a bit for similar reasons), but FWIW I believe there is a sandbox mode to just play around in.
Another chill medieval town building game is Manor Lords. It has some management but overal is laid back.
Oh you just reminded me of the joy of making maps for D&D. I only ever played two or three times, but I had notebooks full of detailed maps of dungeons, cities, whole continents.
