A nondescript square building that has room for two guards that change shift every 8 hours.  There's a fireplace inside, food enough for a week and a large earthenware jug of water for cooking and drinking.
Guard Shack, Outside Tower
squire
guard
I am a guard who almost was executed. I make sure to always be around someone else. I practice with my sword every day.
What brings you to the guard shack, squire? The King sent me on an errand. I see. Do you have something to deliver? I am to deliver the contents of this bag to the captain of the guard. I do not know what is in it and I have instructions that only the captain can open it. Thank you. I will make sure he receives it. Do you live near the castle? As the King's squire, I live IN the castle. Wow! That's incredible. Does the chef cook for you, too? The chef cooks for everyone but of course the King gets the biggest portions. That makes sense. You seem nice. I should probably tell you something so that you're prepared. Is this a message I'm supposed to return to the King? Unfortunately, I'm not sure who to talk to. There's rumors that someone is plotting to overthrow the king.  Any leads on this info?