Can't Remember the mod

I can't remember which mod or version it was for... but I could have sworn there was a mod that made sure  to include specific named castles as special buildings that aren't normally included as a special building in their province. For example, Harrenhal and Storms End would be what I'm referring to as a special building/named castle with some perks/bonuses to the levy, garrison, and defense rating... whereas Riverrun and Highgarden aren't normally included (I think). I'm not sure if I've totally lost my mind and had a very long and neat vivid dream at some point... or if I'm missing a mod I used to play with. Any help would be appreciated.