On September 12, 1820, according to Catholic Prophecy, Sister Emmerich foresaw "a strange church being built against every rule... No angels were supervising the building operations. In that church, nothing came from high above... There was only division and chaos. It is probably a church of human creation, following the latest fashion.
"I saw again the strange big church that was being built. There was nothing holy in it. I saw this just as I saw a movement led by ecclesiastics to which contributed angels, saint, and other Christians. But there [in the strange new big church] all the work was being done mechanically. Everything was being done according to human reason.
"I saw all sorts of people, things, doctrines, and opinions. There was something proud, presumptuous, and violent about it. I did not see a single angel nor a single saint helping in the work. But far away in the background, I saw the seat of a cruel people armed with spears, and I saw a laughing figure which said: 'Do build it as solid as you can; we will pull it to the ground.'
my first thought exactly.
What is that thing? It looks like some kind of Lovecraftian monstrocity build using non-Euclidean geometry.