Popular and talented cartographer Dyson’s Dodecahedron (aka Dyson Logos) spent September and October entertaining fans by drawing swords.
You may well have heard of the RPG cartographer Dyson Logos as you’ll find their art used lovingly by the gaming community.
This article covers not only designing/refurbishing a stronghold but also how to use the rules to make it happen.
Basic World Building uses the tools from 1981’s Basic Dungeons & Dragons and Expert D&D and re-imagined in Old School Essentials to build a starting campaign setting.
There’s a page on Dyson Logos that you should know about.
Summon up a dungeon (or appropriate map) in seconds.