This is a plain room with many pieces of armor and equipment lying about.  They are seen on tables or stored in heavy trunks.  There's racks of plain clothing worn before putting on armor.
Armory, Inside Castle
castle guards
groom
I love horses.  I can curry a horse in five minutes flat.  I live in the stables.
Ah! Good morning. Good morning Groom. What are you doing here in the Armory? I was sent to fetch a breast plate. Who sent you? The prince. Here, he will want it polished. Thank you, guard. He will be pleased when I bring him his freshly polished breast plate. Yes, I have to get into these trucks to see what we have for the new guards. Before you do - is the Prince's sword here? No, the Prince would never part from his sword. Why are you asking questions like this? I did not see it on him at the stable. Then he is in trouble, he always wears it. We must go find him.