This is just an experiment where I working out how to overlay things on a map. When I searched for the locations of the 12 parishes, the only references I could find were just large blobs that didn’t show any boundaries. For example, this page on Wikivoyage So this seemed like a good place to start. I think I have the boundaries correct but if you see an error please let me know using the contact page.
This page is the actual code I used to create the map. I took a screenshot of the page and added the arrows with a graphics editor. The API service is frequently busy – if you get a message that parish boundaries could not be loaded please refresh the page or try again later.
You can download a full-size image of the map (10MB) from here: 12 Parishes of Caldas Da Rainaha Map