The palace of Cres Stros for book the Crucible by Seth Haddon.
I developed the design of the castle into a fully functioning building, which includes service corridors for staff, guard stations (indicated by empty circles) and a water reserviour. I also have added bath rooms which are not labeled but adjacent to the quarters indicated. There are additional hedges to conceal the service areas from that of the palace visitors, and a double vault to the treasury which is only accessible by a single passage that contains permanent guards. There is also a designated training area for guards, paladins and royals, additional columns to support open areas of the stone ceilings and a secret passage exiting the hill to the north of the palace, for discrete use by members of the royal family.
Note: the book is not yet published but this map has been previewed by the author on his Kickstarter which was successfully funded in one hour! You can read more here: https://www.kickstarter.com/projects/sethhaddon/crucible-special-hardcover-edition-queer-fantasy-romance/posts/4367184