A tidbit from the upcoming book from Chris Perkins -- "The Panopticon of Revel’s End, where the Lords’ Alliance keeps its most dangerous criminals. More info on this maximum security prison can be found in Icewind Dale: Rime of the Frostmaiden."
You know... the design of that really reminds me of Baldur's Gate II. So many of its environments were circular or oval shapes (I have wondered if part of the reason for that is them getting a little carried away with not being limited to square tile environments, as so many games before had been).