[toyg]

I personally don't see anything as "unjustifiable" - modern states can (and arguably should) be multipolar. Dedicating a city to administrative bureaucracy is not a terrible idea, in the same way as you'd separate salespeople offices from the factory floor. It's just a very modern concept.

I was just listing a few other famous "unintuitive" capitals. Another one would be Milano vs Roma, although the two are evenly matched on the cultural level.