Human organs.
And church organs.
And church organs made of human organs.
...
BLOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOSSOM!
... :p
If it weren't for the fact that all the levels in Origin/Terminus have been decided, I'd definitely suggest an area which is a church made up of organic material and human organs.