Dolmen
At les Grés de Linas
About Dolmen
Dolmen is the only classé historic monument in Congerville-Thionville, the higher of France’s two levels of protection. It has been classé since 1970.
Le Grès de Linas, appelé aussi dolmen de Thionville, est un dolmen situé sur la commune de Congerville-Thionville, dans le département de l'Essonne.
From Wikipédia (French), article “Dolmen le Grès de Linas” · CC BY-SA 4.0 · read October 28, 2026
MHRead its Mérimée recordThe Culture ministry’s notice PA00088023 on POP↗Classé is the highest protection: no work may be done on the building without the State’s permission, and the State’s architects watch over it.
Finding Dolmen
Congerville-Thionville
Other buildings like it nearby among the classé monuments
With a photo, within 25 mi; other towns first.
Questions about Dolmen
Is Dolmen protected?
Yes. It is classé, the higher of France’s two levels of protection as a historic monument since 1970 (Mérimée record PA00088023).
Can you visit Dolmen?
The list doesn’t say when it is open. Many monuments open on the Journées européennes du patrimoine in September; the town hall or tourist office can tell you more.
Sources: Ministère de la Culture, Mérimée base on POP (immeubles protégés au titre des monuments historiques), October 2026 · Wikimedia Commons and Wikidata (photos of the monuments, each with its own credit and license) · IGN Admin Express (boundaries). Under the Licence Ouverte / Open Licence 2.0 (Etalab).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.