ClasséChurch · protected 1840Collégiale Notre-Dame (ancienne)Photo: Pierre Poschadel · CC BY-SA 4.0 · Wikimedia Commons
Collégiale Notre-Dame (ancienne) · Photo: Pierre Poschadel · CC BY-SA 4.010historic monuments
History of Poissy · Monuments historiques
10 historic monuments, 3 classé
Poissy’s oldest monuments date from the 11th century. Poissy has 2.4 monuments for every 10,000 residents; the median compared French town has 2.5. 7 of Poissy’s monuments are in our photos.
Monuments historiques
10
2.4 per 10,000 residents
median compared town 2.5
median compared town 2.5
Classé
3
the highest protection
Inscrit
7
the second level
Oldest part
11th c.
of any listed monument
Homes before 1919
3.5%
median compared town 7.4%
In pictures
Poissy in 7 photos
Tap a photo to step through them full screen.
Propriété des MeissonnierClassé
Maison métalliqueInscrit
Pavillon d'octroiInscrit
Chapelle de la MaladrerieInscrit
Domaine des MigneauxInscrit+2See all photosPhotos from Wikimedia Commons, copied to our own server, each credited to its photographer with its license; names open the monument’s page.
Map
Where Poissy’s monuments stand
Every monument with a point on the ministry’s list; the larger, darker dots are classé.
ClasséInscrit
Tap a dot to open the monument’s page: its record, photo and the monuments around it.
10 monuments by protection
3 Classé7 Inscrit
Classé is the higher protection: any work on the building needs the State’s permission. Work on an inscrit building must be declared to the State in advance. Around both, building work in sight of the monument (usually within 500 m) needs the agreement of the architecte des Bâtiments de France.
Points as the ministry gives them: a monument spread over several plots has one point.
Classé
3 classé monuments in Poissy
Classé is France’s highest protection for a building, held by about a third of the monuments on the list. Each card opens the monument’s page.
ClasséHouse · protected 1992Propriété des MeissonnierPhoto: Pititnatole · CC BY-SA 4.0 · Wikimedia Commons
House · protected 1965Villa Savoye
Inscrit
7 inscrit monuments in Poissy
Inscrit is the second level of protection: the building is worth keeping, and any work on it must be declared.
Inscrit
InscritResidence · protected 2010Domaine des MigneauxPart of the building is protectedPhoto: Jc.boga · CC BY-SA 3.0 · Wikimedia Commons
InscritHouse · protected 1975Maison métalliquePart of the building is protectedPhoto: Hadriscus · CC BY-SA 3.0 · Wikimedia Commons
InscritPublic building · protected 1937Chapelle de la MaladreriePhoto: Edmond Bories (1857-1925) · Public domain · Wikimedia Commons
InscritTown hall · protected 1996Hôtel de villePart of the building is protected
What’s protected
Houses and homes are the largest group in Poissy
Each monument under the main domain Mérimée gives it.
Houses & homes4
Public & civic3
Religious buildings2
Bridges & engineering1
Houses & homes: 4 of 10 monuments (40%). 2 are religious buildings, 1 of them classé.
Mérimée files each monument under one main domain: a château with its chapel counts once.
How old
How old Poissy’s monuments are
Each monument once, by the oldest part the list dates.
Prehistory & Antiquity to the 4th c.0
Middle Ages 5th–15th c.2
16th to 18th century Renaissance to Revolution1
19th century 1801–19003
20th century and later since 19012
2 of 8 dated monuments have parts from before 1500. The oldest dated: Collégiale Notre-Dame (ancienne) (11th–19th c.). 2 monuments have no date on the list.
When protected
3 of Poissy’s monuments were protected in 1937
Monuments by the year they were first protected.
1840186018801900192019401960198020002020
First protected, in 1840: Collégiale Notre-Dame (ancienne). That was France’s first list of monuments historiques, drawn up in Prosper Mérimée’s time as inspector. 3 were protected in 1937 alone. None has been added since 2011.
Age of homes
3.5% of homes in Poissy were built before 1919
Main homes by when they were finished, beside the median compared French town (the tick).
3.5%
Before 1919
6.2%
1919–45
34%
1946–70
28%
1971–90
13%
1991–2005
15%
2006 on
PoissyMedian compared French town
3.5% of its main homes were built before 1919; the median compared French town has 7.4%. More of them were finished between 1946 and 1970 than in any other period (34%).
INSEE, census 2023: main homes (résidences principales) only; second homes and empty homes aren’t dated.
Born before 1900
7 people born in Poissy before 1900
Their lives on one line.
Alphonse de Poitiers
Jean Boulenger
Auguste Goust
Raphaël Lugeon
Maxime Laubeuf
Charles Eudes Bonin
Félix Févola
120013501500165018001950
AP
Alphonse de Poitiers1220–1271 · Count of Poitou
ML
Maxime Laubeuf1864–1939 · French maritime engineer
JB
Jean Boulenger1550–1636 · French mathematician and professor
AG
Auguste Goust1859–1949 · French politician
RL
Raphaël Lugeon1862–1943 · Swiss sculptor
CE
Charles Eudes Bonin1865–1929 · French explorer and diplomat
FF
Félix Févola1882–1953 · French sculptor
Everyone born in Poissy Birthplaces from Wikidata, checked against Wikipedia.
Neighbors
Historic monuments in the towns around Poissy
| Town | Residents | Monuments | Classé | Protected area |
|---|---|---|---|---|
| Poissy | 40,983 | 10 | 3 | — |
| Carrières-sous-Poissy | 20,825 | 1 | 0 | — |
| Chambourcy | 5,847 | 4 | 1 | — |
| Villennes-sur-Seine | 5,952 | 1 | 0 | — |
| Achères | 22,241 | 0 | 0 | — |
| Saint-Germain-en-Laye | 45,931 | 36 | 13 | Yes |
| Orgeval | 7,252 | 1 | 1 | — |
In brief
Poissy in brief
Collégiale Notre-Dame (ancienne), from the 11th century, is the oldest monument in Poissy. In all there are 10 historic monuments, 3 of them classé. Villa Savoye is part of a UNESCO World Heritage Site. Villa Savoye carries the Architecture contemporaine remarquable label.
Alphonse de Poitiers (1220), Maxime Laubeuf (1864) and Jean Boulenger (1550) are among the 7 people born here before 1900. Its homes are mostly newer: 3.5% were built before 1919, against 7.4% in the median compared French town. The rest is about typical: it has 10 historic monuments, about typical for a town its size (the middle one has 8); and per resident it sits near the middle of compared French towns.
How to read these numbers
What this data can and can’t tell you
- Monuments historiques. France protects buildings at two levels. Classé, the higher (about a third of the list), means any work needs the State’s permission; inscrit means work must be declared to the State in advance. The Culture ministry’s Mérimée base lists every protected building, and this page counts them.
- Partly protected. Many entries protect part of a building only (its façades and roofs, a staircase, a painted room). Each counts as one monument, like a fully protected one.
- Where a monument is counted. In the commune named on its protection, moved to today’s commune where communes have since merged. A monument listed for several communes counts in each.
- Sites patrimoniaux remarquables. Since 2016 France’s protected historic areas (the former secteurs sauvegardés, ZPPAUP and AVAP) share one name. Inside one, building work follows the area’s plan and needs the agreement of the architecte des Bâtiments de France.
- What isn’t here. Protected objects (furniture, organs, paintings), old buildings with no protection, UNESCO World Heritage listings and labels such as “Plus Beaux Villages de France” aren’t on this list, so this page doesn’t count them.
- No History Grade yet. Everything on this page is described, not graded: France’s History Grade isn’t built yet.
Questions about the history of Poissy
How many historic monuments are there in Poissy?
The Culture ministry lists 10 historic monuments in Poissy: 3 classé and 7 inscrit.
Which monuments in Poissy are classé?
3, among them Collégiale Notre-Dame (ancienne), Propriété des Meissonnier and Villa Savoye.
How old are the monuments of Poissy?
The oldest parts of its listed monuments date from the 11th century.
When were monuments in Poissy first protected?
The first in 1840, the latest in 2010.
How old are the homes in Poissy?
3.5% of its main homes were built before 1919 (median compared French town: 7.4%).
France has no History Grade yet: this page describes, it doesn’t grade.
Sources: Ministère de la Culture, Mérimée base on POP (immeubles protégés au titre des monuments historiques), October 2026 · Ministère de la Culture, sites patrimoniaux remarquables, October 2026 · INSEE, census 2023 (main homes by build period) · Wikidata and Wikipedia (people born here) · Wikimedia Commons and Wikidata (photos of the monuments, each with its own credit and license) · IGN Admin Express (boundaries) · Medians and percentiles: TownRatings, over compared French towns, updated November 9, 2026. 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.