See, also: A collection of our favorite visualizations built on Wikipedia data
This is a collection of our favorite visualizations, infographics, and other projects built on open data from Wikipedia and other Wikimedia projects, curated by Stephen LaPorte and Mahmoud Hashemi.
I don’t know a great deal about the Wikipedia open data projects, but there are some great data visualisation examples here. One of them even mentions Borges, what more do you want?
Miscellaneous Details 