Western Hainaut is the name of the North-West part of the Province of Hainaut ( Hainaut occidental in French) . Since the creation of an autonomous Wallonia, it is also called Wallonie Picarde, in light of the regional use of the Picard language.
The most important city in Wallonie picarde is Tournai which is also the oldest city of the Low countries. The Tournai Cathedral, has been classified both as a Wallonia's major heritage and as a World Heritage Site.Tournai is labelled on Tabula Peutingeriana. Tournai gives its name to the Tournaisian: The “Calcaire de Tournai” comprises the limestone formations cropping out in the Mélantois-Tournaisis Anticline (...) which have been quarried since the Roman conquest. Its relationship with the succession of the Dinant area was only understood following study of the Asile d’Aliénés borehole at Tournai and the Vieux-Leuze borehole at Leuze [...] These boreholes exhibited a rather typical middle Tournaisian succession below the “Calcaire de Tournai” that was easy to correlate with the succession of the Dinant area.
Casterman, an important company based in Tournai. published Franco-Belgian comics In 1934, Casterman took over the Le Petit Vingtième editions for the publication of the albums of The Adventures of Tintin. And after the great success of Hergé's albums, authors such as Jacques Martin, François Craenhals and C. & V. Hansen, the first albums of Corto Maltese by the Italian author Hugo Pratt? The company established its monthly magazine (A Suivre), which was to have an impact on the comics revival of the 1990s. It is now part of the Flammarion Publishing group.
Saluk in Calenelle (Péruwelz) produces and distributes billiard balls under the registered trademark Aramith in more than 85 countries, and has a marketshare of 80 % worldwide (90 % of the US market) 
- Luc Hance, Edouard Poty, François-Xavier Devuyst Tournaisian in Geologica Belgica (2006) 9/1-2: 47-53
- Norman, David B. (1985). "To Study a Dinosaur". The Illustrated Encyclopedia of Dinosaurs: An Original and Compelling Insight into Life in the Dinosaur Kingdom. New York: Crescent Books. pp. 24–33. ISBN 0-517-46890-5.
- Dynamisme wallon review of the Union wallonne des entreprises, special issue, december 2007