Thanks to a leprechaun (words I never thought I'd say), the Sanctum from my world - well, this is my world, but from my dimension - is here. It's one of the three sacred spaces that keep magic flowing properly, so to speak. To protect our world from outside magical forces. Obviously, as it's technically the fourth and not on the grid where it's meant to be, it doesn't actually work as such. But it does hold several of our world's texts and artifacts. If we're doing the collaborative thing, it might make for a good meeting space.