Moulin des Buttes Saint-Julien

Moulin des Buttes Saint-Julien is a stone tower windmill standing on a hilltop southwest of the village of Renac, in the Ille-et-Vilaine department of Brittany. Perched at roughly 42 metres above sea level on a rise known as "Buttes Saint-Julien" — the source of its name — the mill has long served as a landmark for the surrounding countryside.

What does the mill look like and when was it built?

The Moulin des Buttes Saint-Julien is a cylindrical, masonry tower mill (moulin-tour) with two internal floors. It was raised in the early 19th century, during a period when stone tower mills were replacing the older timber post mills common across rural Brittany. Its interior still holds the original milling gear — the toothed wheels and drive components that once harnessed wind power to grind grain into flour.

Did a second mill once stand nearby?

Yes. Right beside the Moulin des Buttes Saint-Julien lie the ruins of a second windmill. That pairing points to the hill's past as a working milling site for the wider Renac area: two mills operating side by side, both taking advantage of the same exposed, wind-swept high ground. Today the neighbouring structure survives only as ruins, while the Moulin des Buttes Saint-Julien remains in a far better state and is the one that draws visitors exploring the countryside around Renac.

Why is this windmill protected?

The Moulin des Buttes Saint-Julien was listed as a monument historique on 24 May 1974. The listing recognises the mill as a representative example of 19th-century Breton windmill architecture, valued both for its exterior tower construction and for the surviving interior milling machinery — equipment that has not been preserved in every mill of this kind.

What is there to see on site?

Visitors to Renac find, above all, a striking stone tower set on a hilltop amid a typically Breton rural landscape. The slender, cylindrical form of the tower, together with the remains of its former sail-bearing structure, is a textbook example of early 19th-century windmill design in the Ille-et-Vilaine region. The nearby ruins of the second mill add historical depth, showing how the hilltop once looked when two milling operations stood and worked side by side.

How do you get to the Moulin des Buttes Saint-Julien?

The windmill stands southwest of Renac's village centre, on a modest rise visible from the surrounding roads. Its coordinates are 47.71679, -1.97957. Renac itself lies in the Ille-et-Vilaine department of Brittany, making the mill an easy stop for travellers exploring the region's rural interior, an area well known for its historic windmills and watermills.

Frequently asked questions

What is the Moulin des Buttes Saint-Julien? It is a historic, masonry tower windmill from the early 19th century, standing on a hilltop southwest of Renac in Ille-et-Vilaine, preserved together with its interior milling mechanism.

Since when has the mill been a protected monument? It was listed as a monument historique on 24 May 1974.

Are there other historical remains nearby? Yes — the ruins of a second, older windmill stand directly beside the Moulin des Buttes Saint-Julien, evidence that the hill once hosted two working mills at the same time.

Can visitors go inside the mill? The mill still contains its milling machinery, but access to the interior can vary since it is a privately owned, protected building — it's worth checking current visiting conditions locally before planning a visit.