Druid Haven

Everyone has different tastes; some prefer speedruns and duels with huge armies, while others enjoy exploring the terrain, admiring the landscape, and trying to experience the atmosphere that the creator attempted to convey (which is achieved not only through careful map design but also through two music tracks in the extended version). Strategically, the map allows for variability in the order of capturing towns (which is facilitated, in particular, by a one-way portal to a dungeon) and various nuances in the gameplay that result from this. Furthermore, at least the fifth mission for Agrael and the fourth mission for Findan fit your description (as they don't have any towns at all).

You definitely couldn't have seen this map anywhere else, as it was created from scratch, and the direct inspiration for its creation was a recently played atmospheric mini-campaign for the third installment, which, however, has no similarities in landscape or plot.