Aiguade Vauban
MonumentHidden Treasure
Aiguade Vauban, located in Le Palais (Département 56), is a Renaissance château built in the 16th century. The monument is currently closed to visitors.
Key facts
- Type
- autre
- Period
- Renaissance (16th century)
- Location
- Le Palais, Département 56, Bretagne
- Visit
- Closed to visitors
- GPS
- 47.3311, -3.1425
- Mérimée Reference
- PA00091469
The little-known jewel of Belle-Île-en-Mer, this 17th-century Vauban goad hid a 900m³ freshwater tank in its sides, a lifeline for Louis XIV's royal fleet.
History
Tucked away in a wild cove on Belle-Île-en-Mer, just a stone's throw from Le Palais, the Aiguade Vauban - also known as the Belle Fontaine - reveals itself to those who know how to look for it. This seventeenth-century coastal military edifice is unlike any other fortified monument: discreet, almost blending into the cliff face where it hugs the rock, it can only be guessed at by its two carved stone ducts which, even today, ooze fresh water towards the sea.
Architecture
The Aiguade Vauban is a rectangular structure built of local granite rubble, typical of Breton military structures of the late 17th century. Its gabled roof, covered with a thick layer of topsoil and short grass, gives it an almost organic silhouette, blending into the coastal landscape like an artificial dune. This natural camouflage is not just aesthetic: it protects the vault of the cistern from thermal variations, maintaining the coolness needed to conserve water. The interior houses a fully vaulted room forming the cistern, with a remarkable capacity of around 900 m³ - enough to supply several liners in a single port of call. The thin, unobtrusive perimeter wall defines the space without ostentation. On the seaward side, the architecture is more sophisticated: a retaining wall extends down to a low terrace, built a few dozen centimetres above high water to allow small boats to dock. Two carefully shaped ashlar pipes ensure the continuous flow of fresh water to the sailors' barrels. The most remarkable architectural feature of the building is the technique used to build the coastal wall: the ashlar masonry is anchored in the cliff by a series of horizontal piles driven into the rock, the holes in which were then plugged with cut stone plugs, some of which are still visible. The joints, made with a hydraulic mortar based on lime and tuileau (crushed clay), ensure that the whole structure is watertight against the onslaught of the sea - a skill inherited from the ancient tradition of opus signinum, brought up to date by the military engineers of the Grand Siècle.
Related Figures
Sébastien Le Prestre de Vauban — maréchal de France et commissaire général des Fortifications, inspirateur présumé de l'ouvrageLouis XIV — roi de France sous l'impulsion duquel fut développé le réseau défensif côtier bretonNicolas Fouquet — surintendant des Finances qui acquit Belle-Île en 1658 et initia ses fortifications avant VaubanColbert — ministre de la Marine de Louis XIV, coordinateur de la politique de défense côtière atlantique
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Frequently Asked Questions
Where is Aiguade Vauban located?
Aiguade Vauban is located in Le Palais, Département 56 department, Bretagne region, France.
When was Aiguade Vauban built?
Aiguade Vauban dates back to a period built during the Renaissance (16th century).
Is Aiguade Vauban open to visitors?
Aiguade Vauban is currently closed to visitors.