I certainly was surprised by the beast that should not be named lurking out the back probably having a crafty cigarette. Maybe I should have seen the clue in the title, 666, it all makes sense. Lovely build, I was enjoying the architecture to a point of engrossment, hence the shock at the anterior.
Oh my, awesome doesn't do it justice, but then again; AWESOME! You very smoothly flipped those half-arches, excellent! The mix of colours works really well, and then there is that spooky spider thingy! did I mention awesome? Well it is, ten times over!