The complex has got salt lines everywhere because demons can't cross them, plus devil's traps drawn on the floors. I can send you a picture of the devil's trap, if you like. There's Angel Fire around the building too, to keep angels out. Other than that, it's a hell of a lot of wards and spells by an assortment of magic users from different worlds. I know Loki added some new ones not too long ago. Hope that helps.