Timeline

Heritage classified

Key figures

Origin and history

The bishopric of Tréguier, founded in 850 by Saint-Tugdual, saw its current episcopal palace rebuilt in the early seventeenth century under the impulse of Bishop Adrien d'Amboise (1608). The site, initially enclosed with walls and equipped with gardens, woods and outbuildings, organizes around a forecourt (now General Leclerc Square) and a lower yard. The palace, composed of a central house body flanked by two pavilions and east/west wings, communicates directly with the Cathedral of Saint-Tugdual via the sacristy. The interior spaces, such as the synodal room or the bishop's room, reflect a marked social hierarchy, with reception rooms upstairs and commons on the ground floor.

In the 18th century, Bishop Olivier Jégou de Kervilio (1694–1731) enlarged the palace by adding a north wing and modernizing the facades in a Louis XIV style. His successor, François-Hyacinthe de La Fruglaye de Kervers (1730–45), built the northwest wing, today town hall, with stables and attices. The woodwork and fireplaces, dating from the years 1700–45, illustrate the evolution of tastes, from the Louis XIV style to the Regency. In 1757 Bishop Charles-Gui Le Borgne de Kermorvan shaved an old house ruined to clear the view of the gardens, marking the climax of the transformation of the medieval mansion into a classical palace.

The French Revolution ended the bishopric in 1790: the palace, sold as a national property in 1794, became barracks and then presbytery in the 19th century. Acquired by the city in 1921, it was transformed into a city hall in 1923, with a hall of deliberations decorated with frescoes celebrating local history. The wings are now home to town halls and offices, while the medieval remains (roadways, 15th century masonries) remind the origins of the site. Ranked Historic Monument in 1954 and 1956, its interior has been protected since 2022.

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