An Addon for WoW Classic that uses data taken from GamerMaps.net (with permission) and displays Icons on the World Map and Minimap in game.
Options can be found from the ingame options - Interface Options - Addons - GamerMaps.
From here, WorldMap icons can be toggled on/off altogether and you can also choose which types of Icons to show on the map, or you can tick all types and have all data shown on the World Map.
From the WorldMap you can toggle WorldMap Icons on/off (same effect as Show Icons on World Map from Addons menu).
Minimap Icons will only be displayed if they are in the vicinity, the further the Minimap is zoomed out, the more icons will show, similarly the more you zoom in; the less will show.
There will be many updates in the coming weeks as more functionality is added to the Addon.
Enjoy!