That is both hilarious and amazing. When I first looked at it and saw the grey with a black cross on the back it reminded me of some kind of insane German V weapon from the last days of WW2, though that probably says more about me than it does the church. Sort of reminds me of Chevals Palace Ideal which he built by himself over a 33 year period with stones he picked up on his postal round, at least in terms of the single mindedness of it.
http://www.facteurcheval.com/home.html