A mod about the first Holy Year and Boniface VIII's disagreement with Philip IV, as well as 30 years later.
In favor of greater historicity and realism, the following have been changed: seas, rivers, forests, mountains. The changes (almost) do not concern coordinates of settlements, agnets, resources, etc. With luck, you can continue the old campaign.
Stainless Steel 6.4 Moddb.com
Stainless Steel Historical Improvement Project 0.98 Moddb.com