I had no time to do it yesterday but it is important to describe what's on the picture:
Castle of Sombreffe
In the XII century, Sombreffe was ruled by the Dukes of Brabant. In the XV century, the de Orbais family bought the castle. In the XVI century, it was the de Lalaing, de Ligne, d'Oignies and then de Lannoy families.
This was a "castle of plain", protected by a dubble surrounding wall. The two keeps and six of the ten smaller towers remain. The moat has been filled.
It is now a hall for receptions and weddings.
Castle of Mielmont
Located at southern the border of the former Duchy of Brabant, it was first mentionned in 1125. It is defended by the hilly landscape (it is built on a small cliff overhanging the Orneau river) and by a wall and a small moat. The rest of the building was built in the XVI century.
Castle of Corroy le Château
It is one of the most beautiful and well preserved princely medieval castle in Northern Europe. Built in the 1200 at the frontier of the Duchy of Brabant and the County of Namur, it is flanked by 4 massive towers, a keep and a drawbridge. It was a bastion, destined to protect the frontier against Guy de Dampierre, count of Flanders and Namur.
It is still inhabited by the descendants of its first owners: the marquis de Trazegnies.
http://www.gembloux.be/ot/Curiosite_..._de_corroy.htm