[Yeah she's not a fan of the idea of city-razing, but subjugation's bad too, so she's just gonna put a pin in that for now.]

Not an attack, no. Not sure I really know what happened to it. The priest who witnessed it said that suddenly everything in the building inexplicably aged and started to fall apart, like it'd been sitting there unmaintained for centuries. Just kinda collapsed in on itself. Didn't go great for the priest himself, either.