Peace mapping an interesting example of utilizing visualizations for facilitating peace processes. From the site:
Peace Mapping is like simultaneous visual translation of a wayfinding process:
as mediators guide the parties in conflict, and parties create their solutions to build peace, the visual facilitator draws the map. The map helps everyone involved to get a better sense of orientation (where are we now?) and a more clear picture of the path (where are we going and how will we will get there?).