Wikipedia and network of "culture"

Wikipedia has more than 40 million articles in 280 languages. It represents a decent coverage of human knowledge.
Even with its biases it can tell us a lot about what's important for people. London has an article in 238 languages and
Swansea has in 73 languages. Is London more "culturally" important than Swansea? Probably. 
We use this information and look at various factors that could help us model "cultural" importance of a city and hence
try to find the driving force behind sister city relationships.
We also look at creating cultural maps of different cities, finding the artsy/hipster, academic, political neighbourhoods of a city.