Well... i must admit my victories are >95% from conquest+domination too lol, with the remaining bit mostly religious victories... but here's my take on cultural victory...
There are a few key wonders to pump out those culture (besides using the culture slider).
High priority wonders:
-Syliven's Perfect Lyre (obvious reasons)
-Hall of Kings (+2 culture/spec)
-Theatre of Dreams (+2 culture/bard)
-Grand Menagerie (if you can manage to complete it)
Useful:
-City of a Thousand Slums (you'd want to get a mega-city going for those wonders/bards)
From my experience, I never use the culture slider at all until I have "set-up" my key cities. (ie get a tech advantage, completed most of the useful wonders, built a decent-sized army as deterrence against attacks, got the right civics/population for my 3 core cities)
This is because all that gold should be better spent on research earlier on to ensure that you are still in the tech-race and being able to complete wonders before your rivals do.
I usually do not begin a game with the cultural victory as a goal in mind, I usually decide on it mid-way through the game when I realize that I have a good economy going to be able to divert resources into those "less useful" cultural wonders. And preferably I would be able to somehow isolate myself from most other players so that I could pay less attention to the military aspects--so you'd want to do something like kill everyone else off your continent so you can have relative peace and quiet
Religions:
As much as some might say that OO is
the religion for a cultural victory in some other threads, it is my personal opinion that there are AV and FoL are more powerful religions in heading for the cultural victory.
OO benefits from having the Tower of Complacency--meaning that you'd be able to get one huge mega-city up early on to build the earlier wonders, which is pretty useful.
Their temple adds 3 culture, besides the usual 20% culture bonus for all temples. This might look useful in the beginning, but this becomes totally insignificant later on when each bard specialist could potentially generate way more culture.
AV allows for the running of a really powerful civic--Sac the Weak. This effectively solves all your food production problems, allowing you to run a massive number of bards in your megacities. Of course, this also allows you to hit your population cap much faster, though you might have to be careful that you do not have problems with Armageddon events or Hell terrain (take Hybbie out early)
Following FoL is one of the easiest ways to get your megacities going. With Guardian of Nature you can very easily build up huge populated cities with no problems on your health or happiness side. Also, ancient forests do provide a decent amount of food+production per tile, letting you build wonders at decent rates.
Civics:
Try to stay in GK as long as you can for your capital to grab those early wonders for a decent boost to your culture--then you might want to head to city states or republic depending on how much your empire's maintenance is costing you.
Liberty (duh
). 100% culture bonus, unlim bards, free specialist per city. You'd be able to access this civic early if you join the overcouncil without needing mercantilism. However, I'm not a huge fan of Liberty that early on as I'm usually warring early to crush my closest neighbours.
Caste System. 1 beaker, 2 culture per specialist. Vital for a powerful specialist economy as it helps to keep your research going as you divert to less useful specialists like bards. At the beginning of the game I almost -never- use bards, just the usual scientists, priests, merchants to try to get an academy in each of my 3 main cities for a huge research boost, build holy cities, and get some gold.
IIRC, with Theatre of Dreams, Hall of Kings, Caste system you can reach a base of +10 culture/bard before factoring all the percentage boosts. That's a
massive amount of culture (aka one major wonder worth) per bard specialist that you run. Multiply that by the number of bards you can afford when you set up 3 megacities of at least 25 pop, that comes up to a whole lot of culture per turn. But I usually only start turning them into bards after I've completed setting my cities up.
Civs/Leaders:
I'll agree with Sarisin that you could achieve cultural victory with almost any leader, but of course some are more suited for it than others.
I however, do not think that Creative helps. Creative adds... a whopping... 2 culture for each of your cities. That's useful for land-grabbing early on, saving the trouble of building monuments, but that's about it. Compare that to your eventual bard specialists and wonders, and you'd realize that its a mere drop in the ocean. (sorry Sarisin
)
Its my belief that it is much more important, to get a powerful economy going first, or have a powerful military to crush early opposition before heading for the cultural--so any of the "stronger" civs (or your favourite) would do.
There are of course some highly notable ones though:
Bals. (freaks, slave cages all add nice minor culture boosts, while also adding a lot of happiness, and generates bard GPPs)
Grigori. (when your cities are set up with bards... use the worldspell... and get 1 Great Bard/turn for the next 5 turns at least lol
If you manage to hit birthright regained... but you shouldnt really need to bother about that hehe)
Infernal. (yes... the infernals... I have to say, that I hit cultural on the infernals most of the time rather than go for domination. After a long spate of warmongering and getting your 3 cities up to easily 100 pop each, its just too simple to hit legendary with ALL pop on bards.)
Khazad. (Overflowing vaults, lots of hammers, lots of wonders. 'nuff said
)
Kurios. (3 sprawling megacities--what else are you asking for? Besides, Liberty has so much synergy with settlements too, allowing you to manually force that 1 pop and the free specialist to become 2 useful specialists per settlement)
Ljo/Svart-elves. (farms in trees.......)
Lanun (3 food/water tile, awesome economy)
the list just goes on but i might have overlooked some.
That was just my 2 cents over how I usually head for and get my cultural victory. I'd be more than happy to see/discuss alternatives to the cultural win that might differ from my usual style ^^
Merry Xmas!~
edit: lol after I've typed this chunk out I realized that there was another discussion 3 threads down here
http://forums.civfanatics.com/showthread.php?t=303415 about the cultural victory too~
I seem to have repeated some of Zechno's points hehe~