Yeah, I saw them here, they're really good.
I'm not a designer, and haven't actually played Civ in years. But since I'm Russian and since I like to pretend that I know a thing or two about achitecture, here's some suggestions to anyone willing to make a Russian set
and keep it more or less historically accurate:
Ancient times
Cities should be entirely of wood.
Walls should be a part of the city's picture from the very start. Russian word for city -
gorod or
grad, means 'walled place'. So no walls - no city. That's why I think that walls should from the start and always, in any age, be a part of a city animation, regardless of buildng the 'walls' in game. And with building the actual 'walls' some additional animation could be added.
That first Russian walls could be of horizontally oriented logs with towers like this.
When you actually construct the building 'walls', that small stockade could be replaced (don't remember, though, if it's possible by the game's mechanics) by a more massive wooden walls like this.
To add some additional awesomness you can place a small Slavic pagan shrine with idols, like this, in the middle:
And only when the city grows to 12 it will be historically correct to replace the shrine with a limestone church, to represent the Christianization of major cities Kiev, Novgorod, Polotsk, Pskov, Vladimir etc. The early church desings look like this:
Medieval
Cities get more 'white', some limestone and white-painted brick buildinds become spread, but many parts are still wooden. I'd replace the limestone little church from previous age with big Cathedral.
Additionally, I'd add a small wooden and maybe a small red brick church. The point is, there shouldn't be only one, because in medieval city of Moscow alone there were many hunderds (!!!) of churches.
Wooden walls in cites of 12 could be replaced by limestone and rock walls:
To represent Late-Medieval/Renaissance age, cites over 12 (or a hgher number, don't remember) can get red brick walls.