Spanish Wikipedia there are articles without an illustration. Usuario:Emijrp did embark on a project to put them on a list. This list called the "Imágenes_requeridas_por_zona" contains the geo codes necessary to find the subjects of these articles.
The list that Emijrp created with a bot represents our current technology. It represent a lot of hard work but sadly there is little chance of Dutch Wikipedians on a holiday in Spain taking the requested pictures. When we have a map of the world with all the articles in need of (more) illustrations, we would leverage existing technology. Existing technology like OpenStreetMap..
We need a project manager for map integration. It is not only about illustrating articles with maps, maps have other uses as well.