"Let's explore the palace."

You scout out the place and find much of it unguarded. From what you can see there are no treasure room any where near the lower levels, just a well stocked barracks. The middle levels housed the kitchens, dinning halls and residential spaces. That left the towers. There were three main towers that were big enough to house a treasure room--the east most tower, the west tower and the north tower.

Take the east most tower.

Take the west tower.

Take the north tower.