Black Site-Where all the really dangerous things are kept.  Precursor artifacts, dangerous technologies, scary magical artifacts, and anything else that shouldn’t be allowed out to play with others gets put here.  The Ministry of Ghosts runs quite a few, with all the usual accessories (like a good self destruct mechanism, two-to-four key locks, and self-destructing security systems), and a few additional ones that nobody knows or talks about.  The Special Working Group, supposedly, maintains a number of ships who’s job is to keep all this dangerous stuff away from anything that could try to get it or use it.  Other groups and organizations maintain sites for the same purposes.