There it is . . . a simple side entrance to the Headmaster's office in Ravenwood.
And really it's only used as a staging area for maybe one or two quests, but there's so much to love about this room--mainly the wonderful, magical view of The Spiral in all its glory.
Sometimes I'll make a trip back just to stand in there for a moment and chill out with the swirling colors . . . because it's awesome!