Lonzée

Three different hamlets are mentioned in medieval sources: Harton (Arton), Argenton and Lonzée, located on the border of the Duchy of Brabant and the county of Namur.

In 1357, the border between both is delimited by the Arton (Harton) which divides the village into two parts: Lonzée to the north (Duchy of Brabant) and Argenton to the south (county of Namur).

During the administrative reorganisation following the collapse of the Ancien Régime, Lonzée merged with Argenton to create one municipality.

This involved the exploitation of a formation of Mesozoic glauconite or green clay formed during the Cretaceous (135 to 65 million years ago).

The Saint-Roch church with its neo-Gothic architecture, its bricks, blue stones and slate roof, dates back to 1846.