Maps of our planet.

Such a "world map" already exists, in the folder with the add-ons for Heroes 3.57. But the implementation is not the best, and the gameplay is extremely inconvenient on it. Also, the proportions are not observed, and a lighthouse covering half of Spain looks absurd. So, I think it would be better to take a small area as a basis, for example, where you spend your summer "at your grandfather's in the village".