If links had to be made between Flemish and Walloon cities, they would pair like this.
Provincial capitals
- Arlon & Leuven : both are small and well-to-do, and both are very near and benefit from their closeness from two of Europe's richest cities, Luxembourg and Brussels.
- Namur & Bruges : about the same size, they are respectively called the most beautiful city in Wallonia and in Flanders. Both have a bourgeois atmosphere.
- Wavre & Hasselt : Wavre forms a triplet city with Ottignies-Louvain-la-Neuve. Hasselt is twinned with Genk. Both conurbations are very new, have little history, and are quite residential, safe and prosperous.
- Liège & Antwerp : They are the biggest cities in each region (similar size), but also the most important economically, historically and culturally. Both are border cities with separatist aspirations. Antwerp has one of Europe's biggest ports; Liège is one of the biggest traffic hub, notably thanks to its cargo airport (8th biggest cargo airport in Europe). Both have a brand new TGV station. Both have a lot of immigrants.
- Mons & Ghent : the least similar pair in this comparison. Both have a significant industrial heritage mostly lost today. Both are beautiful cities and have been medieval county capitals before becoming the administrative centre of the provinces of the same name (Flanders and Hainaut). Both of these counties were eventually split between Belgium and France. To further the connection, the Counties of Flanders and Hainaut merged by marriage and remained together for 350 years before passing under Habsburgian rule. Nowadays Ghent is much more prosperous and influential than Mons though.
Other cities
- Tournai & Kortrijk : apart from a similarity in names (Kortrijk is Courtrai in French, and Tournai is Doornik in Flemish ; their Latin names are Tornacum and Cortoriacum), they share the distinction of being among the oldest cities in Belgium, both founded by the Romans and taken over early by the Franks. They are about the same size, are a stone throw away from each others (both in the metropolitan area of Lille), and share an analogous atmosphere.
- Dinant & Ypres : both towns were members of the Hanseatic league and have a long and rich history based on craft and trade. Both are very touristic in spite of having badly disfigured by wars. Both places played an important role in WWI. Dinant was the theatre of one of the very first battles on Belgian soil and is remembered for the massacre of Dinant by German troops. Ypres was scene of some of the fiercest fighting during WWI and was completely razed.