A domed room 400ft in diameter. A faintly glowing lunar globe 120ft in diameter made of enchanted moonstone levitates at the center of the room, rotating sluggishly.
The lunar globe emanates power akin to lunar light and magical effects may take place to relevant creatures of magic items as though they were in moonlight.
Numerous brass measuring instruments, scrolls and books are fitted along curved tables surrounding the globe offset by 50ft...