Thermes, anciennement dits Palais de Constantin
PalaceHidden Treasure
Thermes, anciennement dits Palais de Constantin, located in Arles (Bouches-du-Rhône), is a palace. The monument is currently closed to visitors.
Key facts
- Type
- Palace
- Location
- Arles, Bouches-du-Rhône, Provence-Alpes-Côte d'Azur
- Visit
- Closed to visitors
- GPS
- 43.6790, 4.6272
- Mérimée Reference
- PA00081190
The grandiose remains of a 4th-century Roman imperial palace, the Arles thermal baths are one of the largest ancient thermal baths preserved in France, with their red brick vaults still standing.
History
In the heart of Arles, the city that antiquity elevated to the rank of capital of the Gauls, stand the thermal baths known as Constantine's Palace - an archaeological complex of striking proportions that bears witness to the architectural magnificence of the Late Roman Empire. Listed as a historic monument since 1840, together with the amphitheatre, the ancient theatre and the Alyscamps necropolis, they form the heart of the UNESCO World Heritage Site of Arles. What makes this site truly exceptional is the state of preservation of its caldarium: the large hot room, with its semi-circular apses and barrel vaults, still stands several metres high, offering an architectural interpretation that is rare for a building from this period in French territory. You can clearly see the hypocausts - the ingenious floor and wall heating system - and the hot air circulation ducts, enabling you to understand at a glance how a Roman spa complex worked. A visit to the site invites you to take a trip back to Imperial Arles in the 4th century, the city that welcomed the emperors Diocletian and Constantine. Strolling between the ochre brickwork and the remains of the opus signinum floor, you can feel the power of a place designed not only for hygiene, but also for the political prestige and social life of the provincial elite. The integration of the thermal baths into the modern urban fabric of Arles, between the medieval quarters and the banks of the Rhône, adds a dizzying temporal dimension to this experience. The setting is intimate, despite the monumental nature of the structures: the site can be visited on foot, without the crowds of major attractions, giving it an atmosphere of contemplation, almost confidentiality. Photographers and archaeology enthusiasts will find plenty to marvel at here, particularly in the low-angled light of the morning or late afternoon, when the brickwork absorbs the golden hues of the Provencal sun.
Architecture
The baths of Constantine's palace are an eloquent illustration of the construction principles of late Roman engineering. The building is constructed in opus mixtum, alternating courses of local limestone rubble with beds of reddish-orange fired bricks, a technique that was ubiquitous in public building in the 4th century. This structural polychromy, typical of late Roman architecture in southern Gaul, gives the ruins a remarkable clarity and plastic beauty. The preserved centrepiece is the caldarium, whose eastern apse still stands at an estimated height of around ten metres. Its brick barrel vault, partially collapsed but still present over a large section, reveals the structural mastery of the Roman builders. The floor reveals the hypocaust system: brick piers (pilae) supported a raised floor (suspensura) under which hot air produced by praefurnia (fireplaces) circulated. The walls themselves were hollow, fitted with terracotta tubuli to spread the heat over the entire internal surface. The general plan, partially reconstructed by archaeologists, suggests a symmetrical layout on either side of a longitudinal north-south axis, with several semicircular apses for the pools. The total width of the spa complex exceeds 100 metres, making it one of the largest surviving ancient spa complexes in France. The facing materials - marble and painted plaster - have disappeared, but their imprints in the masonry bear witness to the original refinement of the interior decoration.
Related Figures
Constantin Ier (306-337) — empereur romain ayant fait d'Arles une résidence impériale d'Occident, auquel le palais et les thermes sont traditionnellement attribuésDioclétien (284-305) — prédécesseur de Constantin, dont les réformes administratives élevèrent Arles au rang de capitale des GaulesConstance II (337-361) — fils de Constantin, qui maintint Arles parmi les grandes résidences impériales et y tint plusieurs séjoursProsper Mérimée (1803-1870) — inspecteur général des Monuments Historiques, artisan du premier classement des thermes dès 1840Auguste Véran (XIXe siècle) — archéologue arlésien ayant contribué aux premières descriptions scientifiques du complexe thermalHonorius (395-423) — dernier empereur à faire d'Arles un centre administratif de premier plan, sous lequel la ville connut un ultime rayonnement antique
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Frequently Asked Questions
Where is Thermes, anciennement dits Palais de Constantin located?
Thermes, anciennement dits Palais de Constantin is located in Arles, Bouches-du-Rhône department, Provence-Alpes-Côte d'Azur region, France.
Is Thermes, anciennement dits Palais de Constantin open to visitors?
Thermes, anciennement dits Palais de Constantin is currently closed to visitors.