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Origin and history

The Tour de la Lanterne de Rochecorbon is the last vestige of a medieval fortress built on a rocky spur overlooking the Loire, in the department of Indre-et-Loire. Ranked a historic monument in 1840, this 10-metre-high tower, crowned with niches, probably dates from the 11th century, although some historians suggest construction or restoration in the 15th century. Its architectural style and strategic location make it a rare testimony of medieval defensive systems in Touraine.

The Rochecorbon site, mentioned in the ninth century as Vodanum, was a strategic crossing along the Loire. A castral motte, possibly built by Bishop Hardouin (960–980), preceded the stone castle initiated in 1093 by Thibaud des Roches, grandson of the knight Corbon. This castle, contested by Foulques IV d'Anjou, was seized before its completion around 1100. The peace returned in 1133 allowed Robert de Brenne, son of Thibaud, to continue the work, replacing the wooden palisade with a masonry enclosure and adding a chapel in 1157.

In the 13th century, Geoffroy de Brenne enlarged the castle and strengthened its defences. During the Hundred Years' War, the fortress, which became a strategic place, was briefly occupied by Anglo-Gascons (1424–127) before being abandoned after peace. Geoffroy de Maillé, indebted by the restorations, abandoned it in 1475. Sold as a national good in 1789, it was already more than a ruin, as evidenced by a painting of 1797. Only the Lantern, threatened by the erosion of the snorkel's hillside, remains today.

The exact dating of the tower remains debated: although it is often associated with 1095, historians such as Arcisse de Caumont (1857) instead place it in the 15th century, due to its characteristic style. No written source describes the original appearance of the castle, but the tower, 10 meters high, was integrated into the southwest corner of the enclosure. Although private property, it is exceptionally open to the public at European Heritage Days.

The Lantern is now at risk because of the instability of the hillside, eaten by erosion and dug troglodytic cavities. Local legends lend him various roles: lighthouse for sailing on the Loire, lantern of the dead, or memorial linked to an eagle hunt by Robert de Brenne. No historical evidence validates these stories, but they illustrate the imaginary attached to this iconic site.

The village of Rochecorbon, originally called Vodanum, derives its present name from Corbon des Roches, a knight mentioned before the year 1000. The great ancient path along the Loire passed at its feet, stressing its strategic importance from ancient times. The castle, symbol of the struggles between Counts of Anjou and Blois for the control of the Touraine, was also a religious issue, with the bishops of Tours refusing the authority of the Counts. Its decline reflects that of medieval fortresses after the end of feudal conflicts.

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