City of a Thousand Temples

I saw this post on Reddit, and my mind starting whirring.

What would life be like in a city with hundreds upon hundreds of different temples? Would they all worship the same god in a myriad different ways? Would they all worship a group of gods, but with as many variations again?
How would culture be shaped by this? Would people be more cosmopolitan? Would street fights break out over an imagined sleight, because your god called my god a name, according to some other third party?

I’m going to keep pondering on this. Seems like a lot of ideas could spawn from here.