James asked for some pictures of the stacks and the library. I’ve included a bunch over the fold.
First up: here is the citadel itself:
(You can’t see it in this picture, but there are some rather nice whimsical stone carvings.)
I didn’t take a photo of the stacks entrance because of being too squeamish about looking like a tourist, but here’s the corridor that one emerges into after getting out of the lift.
And if one happens to walk in the right direction, one will come to this door:
And if one opens said door, one comes across this:
After a bit of bumping around, the object of one’s quest: