What aspects of architecture made for the Christian church reflect architecture made for the Roman Empire?

In France, some of the great cathedrals literally look like temples that the Greeks and Romans used.  Some of them have huge and majestic pillars/columns, and labyrinths, which were common in greek and roman architecture and mythology.

so, not gonna do the actual thing because that's just laziness for an easy assignment like this.

but someone that has a lot of information and interesting details about is picasso. you can easily write a 500 word essay about him and how overtime his paintings of himself got more and more deformed representing that he was forgetting what he looked like and that was from memory.