This large, domed building has been constructed of the darkest black obsidian. A pair of colossal double doors open to the south, doors that are almost always propped open, not to allow free entry to those who seek it, but to tempt people to do so. Upon journeying inside, one is met by a squad of shadow beings trained in the dark arts by The Makuta himself, that same squad will sooner kill you on sight then welcome you into their evil ways. But, if they show you mercy, -and they never do- you may be leeched of your light and taken in to increase their numbers.
On the floor underneath the main dome is the symbol for Shadow, ironically filled with marble rubble and bits of gold. To the side of each aisle are small rooms for the shadow beings to conduct their own personal pursuit of darkness. The building itself seems to generally remain empty, that is until a wondering citizen passes between the doors...