Once an enclave in the principality of Liège, the rural municipality of Clavier lies on the border of the three provinces of Liège, Namur and Luxemburg. The landscape shows the typical hills and valleys of Condroz. Together with Bois-et-Borsu, les Avins and Terwagne, Clavier belongs to the eastern part of the Condroz region and borders on the Belgian Ardenne. It is one of largest municipalities in Belgium and has the highest density of castles per km2 : the castle of Ochain (with a 17th century façade), the castle-farm of Ponthoz from the 17th century and the castle of Vervoz, whose farming fixtures and the chapel Saint-Hubert form a remarkable 18th century ensemble.
Also note the castles of Pair, Pailhe, St-Lambert, Amas et St-Fontaine.