Louvain-la-Neuve is a modern town in the province of Walloon Brabant in the French-speaking part of Belgium. It was created in 1969 in order to host the Catholic University of Louvain, which had just separated from the Catholic University of Leuven, and had to move from Flanders to Wallonia. It has about 20,000 inhabitants, with approximately the same number of students attending the university and colleges in town. Be careful not to confuse between Leuven which is a town in Flanders, and is also spelled Louvain in French, and Louvain-la-Neuve. You can also find the abbreviation LLN.
Read more on wikivoyage