Lommoye: Nature and Cultural Heritage

Several themes can shape your travel plans in Lommoye: the source area of the Ru de Bonnières-sur-Seine, the Forêt de Rosny, historic buildings and theatre events.

Landscape and nature around Lommoye

The source area of the Ru de Bonnières-sur-Seine lies in Lommoye and La Villeneuve-en-Chevrie. The watercourse does not flow continuously; a flowing section was observed at the bridge on Rue Paster in Lommoye. The edge of the Forêt de Rosny extends across Lommoye, La Villeneuve-en-Chevrie and Boissy-Mauvoisin. Some wooded areas continue this large natural landscape across the plateau, while the forested massif defines the horizon.

In the wider region, the Boucles de Moisson, Guernes et forêt de Rosny Natura 2000 site stretches between the Seine Valley and the Lommoye plateau. It consists of three landscape units and broadens the view of nature beyond the edge of the forest. A notice dated 15 May 2023 identifies Lommoye as the site of the largest maternity roost of Geoffroy’s bat (Myotis emarginatus) in the Île-de-France region.

Walking trails and sights in the forest

The Forêt régionale de Rosny does not lie entirely within Lommoye and can be explored via numerous walking trails. Sights visible to visitors there include the Kiosque de Rosny, the remains of the Château des Beurons and the Chêne Mademoiselle oak. Looking out over the forest, you can distinguish the natural landscape from these individually named places. Check access points and trail conditions before your trip.

Architectural history from the estate to the church

The origins of Domaine de Mauvoisin date back to the 12th century. At that time, Raoul de Mauvoisin, Lord of Rosny, had a castle and several outbuildings built there, including a farm, a prison and dungeons. The estate also includes a dovecote dating from the 18th century. These two dates provide a clear framework for the estate’s architectural history, from the construction of the medieval castle to a later architectural feature.

The Church of Saint-Léger is a limestone building dating from the 13th and 16th centuries; its bell tower was rebuilt in 1868. The Romanesque entrance portal is decorated with archivolts patterned with stars and zigzags. Inside, the church has a rectangular nave with a side aisle on the north side and three tracery windows. 19th-century stained glass depicts the four Evangelists. The bronze bell can also be dated: it dates from 1771 and is protected as a movable historic monument. If you would like to visit the church interior, check local opening arrangements in advance; these may vary.

The Priory of the Holy Trinity is also part of Lommoye’s history. It was a dependency of Bec-Hellouin Abbey and was destroyed during the French Revolution.

Performances and training

At the Ferme Théâtre Chapiteau in Lommoye, the Compagnie Étincelle Bouillasse offers performances, parades, and training in clown techniques and theatre. This adds a performing arts offering to the architectural and landscape attractions. As programmes and training times may change, check the latest dates before making specific plans.

Discover more destinations: Bouafle, Saint-Léger-En-Yvelines, Noisy-Le-Roi, Perdreauville, Gambais, Carrières-Sur-Seine, Hargeville, La Celle-Saint-Cloud.

For the wider travel overview: Yvelines.