Couvent des Augustines (ancien Hôtel-Dieu) · Photo: Yodaspirine · CC BY-SA 4.0

27historic monuments

History of Tréguier · Monuments historiques

A secteur sauvegardé since 1985, and 27 historic monuments

The Culture ministry lists 27 historic monuments in Tréguier: 7 classé (France’s highest heritage protection) and 20 inscrit (the second level). The oldest date from the 12th century. That’s 118 for every 10,000 residents; the median compared French town has 2.5. We have photos of 26 of them.

7classé 1985protected area 12th c.oldest part 1840first protected

Monuments historiques

118 per 10,000 residents
median compared town 2.5

Classé

the highest protection

Inscrit

the second level

Oldest part

12th c.

of any listed monument

Homes before 1919

20%

median compared town 7.4%

In pictures

Tréguier in 26 photos

Nearly every classé monument, photographed. Tap a photo to step through them full screen.

Maison d'Ernest Renan, actuellement musée RenanClassé

Ancienne cathédrale Saint-Tugdual et cloîtreClassé

Hôtel de la TourClassé

Maison à pans de boisClassé

Ancien évêché, actuellement presbytère, mairie et hôtel de villeClassé+21See all photos

Photos from Wikimedia Commons, copied to our own server, each credited to its photographer with its license; names open the monument’s page.

Protected area

Tréguier has had a protected historic area since 1985

Sites patrimoniaux remarquables on the Culture ministry’s list, with the plan in force.

Area	Created as	Plan in force
SPR53-16	Secteur sauvegardé June 27, 1985	PSMV (safeguarding plan) February 25, 2022

A site patrimonial remarquable protects a whole area rather than one building: inside it, building work follows the area’s own plan and needs the agreement of the architecte des Bâtiments de France. A PSMV (plan de sauvegarde et de mise en valeur) is the strictest plan: it covers every building, inside as well as out.

The list gives no boundaries, so the map can’t show the area.

Map

Where Tréguier’s monuments stand

Every monument with a point on the ministry’s list; the larger, darker dots are classé.

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. 1 monument has no point on the map.

Classé

7 classé monuments in Tréguier

Classé is France’s highest protection for a building, held by about a third of the monuments on the list. 4 of the 7 are protected in part only (a façade, a roof, a room). Each card opens the monument’s page.

Cathedral · protected 1840Ancienne cathédrale Saint-Tugdual et cloîtrePhoto: Chris06 · CC BY-SA 4.0 · Wikimedia Commons

Church · protected 1930Ancienne église Saint-MichelPart of the building is protectedPhoto: GO69 · CC BY-SA 3.0 · Wikimedia Commons

Convent · protected 1997Couvent des Augustines (ancien Hôtel-Dieu)Part of the building is protectedPhoto: Yodaspirine · CC BY-SA 4.0 · Wikimedia Commons

Town house · protected 1924Hôtel de la TourPart of the building is protectedPhoto: GO69 · CC BY-SA 3.0 · Wikimedia Commons

House · protected 1948Maison à pans de boisPhoto: Thérèse Gaigé · CC BY-SA 4.0 · Wikimedia Commons

Bishop’s palace · protected 1954Ancien évêché, actuellement presbytère, mairie et hôtel de villePart of the building is protectedPhoto: Brieg · Public domain · Wikimedia Commons

House · protected 1944Maison d'Ernest Renan, actuellement musée RenanPhoto: Moreau.henri · CC BY-SA 4.0 · Wikimedia Commons

Inscrit

20 inscrit monuments in Tréguier

Inscrit is the second level of protection: the building is worth keeping, and any work on it must be declared.

All 20, A to Z

12 more, named only by their kind

12 more are named in the list only by their kind: 11 houses (maisons) and 1 other, most from the 15th century. The 12 with an address are in the list above, by it.

15th c.5

16th c.3

20th c.1

undated3

See all 27 on the map

What’s protected

Most of Tréguier’s monuments are houses and homes

Each monument under the main domain Mérimée gives it.

Houses & homes19

Religious buildings5

Public & civic1

Bridges & engineering1

Farm buildings1

Houses & homes: 19 of 27 monuments (70%). 5 are religious buildings, 4 of them classé.

Mérimée files each monument under one main domain: a château with its chapel counts once.

How old

How old Tréguier’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.11

16th to 18th century Renaissance to Revolution12

19th century 1801–19000

20th century and later since 19011

11 of 24 dated monuments have parts from before 1500. The oldest dated: Ancienne cathédrale Saint-Tugdual et cloître (12th & 16th c.). 3 monuments have no date on the list.

When protected

11 of Tréguier’s monuments were protected in 1964

Monuments by the year they were first protected.

1964 · 11

1840186018801900192019401960198020002020

First protected, in 1840: Ancienne cathédrale Saint-Tugdual et cloître. That was France’s first list of monuments historiques, drawn up in Prosper Mérimée’s time as inspector. 11 were protected in 1964 alone. None has been added since 2011.

Age of homes

20% of homes in Tréguier were built before 1919

Main homes by when they were finished, beside the median compared French town (the tick).

20%

Before 1919

8.8%

1919–45

26%

1946–70

25%

1971–90

9.3%

1991–2005

10%

2006 on

TréguierMedian compared French town

20% 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 (26%).

INSEE, census 2023: main homes (résidences principales) only; second homes and empty homes aren’t dated.

Born before 1900

7 people born in Tréguier before 1900

Their lives on one line.

Nicolas Yves Borie

Athanase Clément de Ris

Paul de Dieuleveult

Henriette Renan

Hyacinthe du Pontavice de Heussey

Ernest Renan

Gustave de Kerguezec

175017751800182518501875190019251950

Henriette Renan1811–1861 · French writer

Ernest Renan1823–1892 · French philosopher and writer

Nicolas Yves Borie1757–1805 · French politician

Athanase Clément de Ris1782–1837 · French politician

Paul de Dieuleveult1799–1867 · French politician

Hyacinthe du Pontavice de Heussey1814–1876 · French poet

Gustave de Kerguezec1868–1955 · French politician

Everyone born in Tréguier Birthplaces from Wikidata, checked against Wikipedia.

Neighbors

Historic monuments in the towns around Tréguier

Town	Residents	Monuments	Classé	Protected area
Tréguier	2,294	27	7	Yes
La Roche-Jaudy	2,629	4	1	Yes
Penvénan	2,584	7	3	—
Louannec	3,019	2	0	—
Paimpol	7,341	13	2	Yes
Ploubazlanec	2,932	5	2	—
Perros-Guirec	7,336	12	5	Yes

In brief

Tréguier in brief

Since 1985, the heart of Tréguier has been a secteur sauvegardé, France’s strictest protection for a historic town. In all there are 27 historic monuments, 7 of them classé, including Couvent des Augustines (ancien Hôtel-Dieu). Its housing is old: 20% of homes date from before 1919, against 7.4% in the median compared French town. Its classé monuments cluster together: 6 of them stand within 400 m of Ancienne cathédrale Saint-Tugdual et cloître. Maison d'Ernest Renan, actuellement musée Renan is one of the Maisons des Illustres, the homes of people who left their mark on France.

Most entries on the list, 70%, are houses and homes. Of the 24 with a date, 12 come from the 16th to 18th centuries.

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 Tréguier

How many historic monuments are there in Tréguier?

The Culture ministry lists 27 historic monuments in Tréguier: 7 classé and 20 inscrit.

Which monuments in Tréguier are classé?

7, among them Ancienne cathédrale Saint-Tugdual et cloître, Ancienne église Saint-Michel, Couvent des Augustines (ancien Hôtel-Dieu), Hôtel de la Tour, Maison à pans de bois and Ancien évêché, actuellement presbytère, mairie et hôtel de ville.

How old are the monuments of Tréguier?

The oldest parts of its listed monuments date from the 12th century.

Is Tréguier a protected historic area?

Yes: part of Tréguier has been a site patrimonial remarquable since 1985.

When were monuments in Tréguier first protected?

The first in 1840, the latest in 2007.

How old are the homes in Tréguier?

20% 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 4, 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.