Rooiermolen

Rooiermolen is a historic water mill standing on the Itterbeek stream in Opitter, a village belonging to the municipality of Bree in the Belgian province of Limburg, right next to the border with Gruitrode. This undershot grain mill, driven by water striking the lower part of the wheel, forms part of the network of historic mills in the Kempenbroek region and remains one of the more interesting surviving traces of the area's old water-powered economy.

How old is the mill and where does its story begin?

The first written mention of the mill dates back to 1267, when Count Arnold IV of Loon granted the tithes of Gruitrode to the Abbey of Godsberg in Neeroeteren — most likely in exchange for another mill in the same area, the Dusselermolen. This places the origins of a mill on this site firmly in the medieval period, even though the current structure is naturally much younger and has been rebuilt several times over the centuries.

Who owned the mill through the centuries?

On December 18, 1416, the mill, together with the lordship of Gruitrode, was sold by Jan van Heinsberg to Ivan van Cortenbach, then land commander of the Teutonic Order (Duitse Orde) at Alden Biesen. From that point the mill became tied for a long stretch of history to the order's estates, a common pattern in the region: the landholdings of knightly orders included not just farmland but also the right to collect milling fees from local farmers. On the 1777 Ferraris map, the mill appears under the name Moulin de Groot Roy, confirming it was still operating in the eighteenth century, toward the end of the pre-industrial era.

What happened to the mill after the French Revolution?

Along with other properties formerly belonging to the Teutonic Order, the Rooiermolen was confiscated by French authorities in 1802 and sold as state property. This was the typical fate of church and religious-order estates in the Southern Netherlands once the territory was annexed by France — secularization at the time affected dozens of similar sites across the region.

Why did the mill lose its original wheel?

In 1958, an event permanently changed the mill's appearance: its large wooden water wheel collapsed. Just two days later, the mill's interior mechanisms were sold to the Bokrijk open-air museum — one of Belgium's most important open-air museums — where the original milling machinery was incorporated into a different water mill that had earlier been relocated from the hamlet of Rekhoven in the municipality of Lummen. Thanks to this, the old equipment of the Rooiermolen survived, even if in a different place and a different exhibition context.

What does the mill look like today?

The site did not remain functionally empty for long: in 2010 a new metal undershot wheel was installed, while the original concrete sluice and weir structure regulating the flow of water from the Itterbeek was preserved. As a result, the Rooiermolen still presents itself as a working element of the water landscape, rather than simply a ruin or an empty shell of a former industrial building.

Frequently asked questions

Where exactly is the Rooiermolen located? The mill stands at Opstraat 98 in Opitter, part of the municipality of Bree, in the province of Limburg, close to the border with Gruitrode.

Is it still the same mill as in medieval times? The site and the milling tradition go back to the 13th century, but the structure itself has been rebuilt many times, and the water wheel was replaced with a new one in 2010 after the original collapsed in 1958.

Where did the mill's original machinery end up? At the Bokrijk open-air museum, where it was incorporated into a different water mill originally from Rekhoven.

What type of water wheel powers the mill? An undershot wheel, driven by water striking its lower section — a typical solution for lowland grain mills in this region.