Recruitment centers show that the noble leaders are concerned with the protection of the realm. Also job prospects.
Scouts centers and healers would do the same when it comes to jobs.
Temples would show a concern for spiritual health.
Basically, every single building would show a dedication to bettering the lot of the commoners by giving them jobs or opportunities they otherwise would not have.
And that would make neighboring regions look more favorably upon those regions as someone they might want to get closer to. And by extension, the realm that protects them.
