Travel to the west tower.

There weren't many guards on the west tower. As you neared the top of the tower it emptied out into an anteroom and instead of a guard there was an old man wearing glasses sitting at a desk. He was dress in the gold and purple clothes of royalty. In front of him were books, stationary, an inkwell and a quill. 

"May I help you?" asked the old man.

"We have orders to access that room over there." you say.

"Orders?" asked the old man. "You don't need orders, you only need to know how to read. It doesn't look like you do or you would have noticed the sign on the door."

There was indeed a sign on the door and in read: "Royal Library"

"You can go in, but no books are allow out of the library." said the old man.

"Let's explore the palace some more."