A bland and not very imposing door is the only means by which one exits the tower. There is nothing special about the entrance - it is a simple stone arch. A broom and mop bucket are next to the door that leads to the outdoors.
beside tower entrance, Inside Tower
king
master at arms
I am the master-at-arms. I work in the king's armory. I like to monitor all the weapons and make sure they are clean and sharp.
What? I'm shocked  As am I.  Suggestions? Can we send in the guards? I'll keep sharpening the weapons.  No, I think it had best be you that leads the relief expedition.  What will be your strategy? I think I'll consult with the general first. He's always so good at devloping strategies.  No time man!  I am your King, you can't avoid the question any longer, or I shall consider it to be a case of either cowardice or incompetence on your part. Ok, send in the guards, youngest first. They never fear anything. Surround the scoundrels.  Interesting plan, send in the least experienced men where they will get slaughtered, their deaths causing a cascading morale collapse in the men.  I think not, try again. That's why they call them cannon fodder. What do you expect? I'm not sending in our brightest men first. We need them more. My god man - the biggest and most experienced men are less likely to flee, more likely to hold the line and carry the day.  Have you never studied tactics at all?  Why are you my master at arms then? Sir, I work in the armory. My job is to sharpen the weapons and keep them clean. I don't study tactics.  That is what any dolt with half a brain could do.  you have obviously become addled.  I hereby strip you of all lands, rank, and title and sentence you to the dungeons for imbecility.