How on Earth does border fort work???

[Serpent]

That is probably the case. I do know when a province is bribed there is absolutly no damage done to any existing buildings.

Thing is that when i see really good province that has been build very well I tend to bribe castle first and then take it.This way I wont loose any buildings . This time I couldn't attack right away so after 2 turns i had Fortress and big smile.

But if you start thinking about how this would work in real world ....I would say that would be hilarious sight . One groub has siege on and they are trying to kill everyone in the castle and they are fighting for they life. the there is big peasant groub trying to build fortress and worrying about tight schedule.
And they really would be shouting and Because they are harashed these medieval warriors.

aah nice little chaos.