Anyway, the reason the churches of old are so beautiful is that many of them were run by the state, and they had the money to throw at good architecture, and the prestige to pull talented architects (who were usually religious themselves anyway, and had a personal stake in building a church). Then after states started separating from the churches, independent churches started popping up, so now you can easily run the full gamut of old building to new building to school hall to house church in the same city.
Basically, churches were then what university and tech company campuses are today - sandboxes for creative architects.
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Actually, the Roman Catholic cathedrals were paid for and built by the church, in Europe in the 9th to 14th centuries, when the state was really about the king or leader of the country. I am not sure about Anglican, or Church of England, because the Queen is the head of the church. So perhaps in the in the early history of that church, it was paid for by the state.
In fact, in England and France the churches were pillaged after revolutions and monarch changes. King Henry the VIII disbanded Catholic churches and melted down the gold items, basically stealing from them anything of value. Then Bloody Mary (his daughter) did the same to the Protestant churches, which were reestablished by Elizabeth I. The same goes for killing Charles I, the Puritans tried to rip down the Protestants and the Catholics churches, under Cromwell, then they were reestablished under James II. (Not to be confused with James 1, of KJV fame!) And of course, Enlightenment France after their incredibly bloody revolution tore down many churches, except the ancient cathedrals, which are tourist attractions.
It may be in Quebec that the government gave help in the initial years of that province, before it was conquered by the English in 1759. Of course, you would be more knowledgeable about Australia, but in Canada, no churches were paid for by the state, and I would imagine the US government did not pay for any churches either, with its vehement separation of church and state.
Really, the state barely figures into anything about most of the older cathedrals, which are incredibly beautiful, by the way. As far as smaller churches, congregations paid for many of them, or the denomination!
PS. I am always glad to see you posting, IntotheVoid. You are respectful of our beliefs, and for me, I pray for you and the other atheists who are contributing members of this forum. Of course, I pray for God to reveal himself to you so that you would realize the error of your ways, and God would save you!