Minutemen Grand Castle Capital
This is one of the best Castle mods that we've come across and it's an excellent choice for anyone that's working alongside the Minutemen faction.
Minutemen Grand Castle Capital reimagines the settlement and adds a Grand Lobby, Memorial Courtyard, General’s Quarters, Barracks and a whole lot more. It looks and feels a whole lot better than the vanilla version of the Castle.
If you download this mod make sure you download the developers other mod, the Minutemen Morale Pack. It adds a ton of custom Minutemen related Workshop items which will come in handy when you go to decorate this new version of the Castle.
For more on these excellent mods, take a look at the video below.