It's a fair question & I don't have a good answer. The city I enjoyed visiting the most was probably New York, but I'd hate to live there. All the large cities I've lived in (Sydney, Melbourne, Brisbane, London, Glasgow) have been piss poor. Essentially I think truly 'large' cities (over a million or so) are inconducive to human flourishing.

But Australia (1) crushes its small population into a few huge cities (almost uniquely so I think for a non-city state?), and (2) is horrible at all urban scales. Is there anything as ugly as (say) Coffs Harbour (essentially a strip mall with cardboard suburbs) outside of the US?