Board Thread:Suggestions on Baldur's Gate Wiki/@comment-3234315-20191128083600/@comment-3045005-20191128134625

Honestly I think the best solutions to maps in complex games are Google Maps-like interfaces and plugins, which can change what they show as you zoom in and out, or have filters to turn on or off all of a particular type of thing (turn off all lootable containers etc.).

The UESP wiki for Elder Scrolls has one of my favorite maps, but I would guess it's all very complex custom code with a lot of data custom exported from the game. You can zoom in on it and see a lot of things marked on it as you get close:  https://srmap.uesp.net/