Castle of Guiche, known in Basque as the Castle of Gixune, stands on a strategic hill overlooking the Bidouze River near its confluence with the Adour in the northern Basque Country. Today the fortress survives largely in ruins, although restoration work on the tower began in 2008. Before the arrival of artillery warfare, the elevated position and strong defensive structures made the castle almost impregnable.
The name “Guissen” first appears in documents from 1080, while the Basque form “Gixune” remained in local use. The area occupied an important frontier zone between Basque-speaking and Gascon-speaking territories and later became associated with both Labourd and the Navarrese lands of Ultrapuertos.
Medieval History and the Gramont Family
The earliest lords of Guiche were vassals of the Kings of Navarre, suggesting that an initial fortress already existed during the eleventh century. After the Kingdom of Navarre lost access to the coast around San Sebastián in 1200, control of river routes toward Bayonne became strategically essential. Guiche controlled tolls and navigation along the Bidouze, an important tributary of the Adour.
In 1257 the castle was burned by boatmen from Bayonne because fishing structures placed across the river obstructed navigation. The fortress was rebuilt during the late thirteenth and fourteenth centuries. In 1332–1333 the powerful Albret family acquired the castle, provoking violent rivalries with the neighboring Gramont family of Bidache. During the Hundred Years’ War the castle became a major military position and even housed a mint in 1377 producing coinage for the English crown.
The castle later passed through the Beaumont family before being conquered in 1523 by troops of Emperor Charles V. In 1534 Claire de Gramont took possession of Guiche, and the fortress became part of the growing Gramont domains. Rebuilt several times, the castle eventually formed part of the Duchy of Gramont in 1648 and remarkably still belongs to the Gramont family today.
Practical Information for Visitors
Although partially ruined, the Castle of Gixune remains one of the most important medieval sites in the inland French Basque Country. Visitors can admire surviving towers, defensive walls, and panoramic views over the Bidouze Valley and surrounding countryside.
The village of Guiche is located around 35 minutes from Bayonne and can easily be combined with visits to Bidache, Hasparren, or other historic villages of inland Labourd and Lower Navarre.
Posted on May 21, 2026
