Casteau
![Casteau, old village under the snow. – Picture: Jean-Pol Grandmont.](/Images/godic/202501/03/Casteau_JPG011439.jpg")
![Casteau, the old watermill. – Picture: Jean-Pol Grandmont.](/Images/godic/202501/03/Casteau_JPG021439.jpg")
Casteau is a village of Belgium in the French-speaking region. With the others villages Chaussée-Notre-Dame-Louvignies, Horrues, Naast, Neufvilles, Soignies (town), and Thieusies, they compose the municipality of Soignies.
The village is located between the towns of Mons and Soignies on the road Mons-Brussel. The river Aubrecheuil flows through the village. In the past, there were some watermills along the river.