Canton of L'Estuaire

Blaye (French: [blaj] ; Occitan: Blaia pronounced [ˈblajɔ]) is a commune and subprefecture in the Gironde department in Nouvelle-Aquitaine in southwestern France. For centuries, Blaye was a particularly convenient crossing point for those who came from the north and went to Bordeaux or further south, to Spain and Portugal. Fortified since antiquity, this eminently strategic site located on the bank of a large river, was modernized at the end of the 17th century, thanks to Vauban. In 1685, the Commissaire general des fortifications of Louis XIV proposed the construction of a real lock on the Gironde in order to "take control of the river" and to hold Bordeaux in case of a revolt. It is then that the citadel of Blaye was built, constituting the major element of the estuary control system. Dominating the urban landscape, this imposing building has been listed as a UNESCO World Heritage Site since 2008, as part of a group of structures engineered by Vauban, in testimony to their global influence on military architecture and planning over the next few centuries.

The Basilica of Saint-Romain, Blaye, was an important Merovingian basilica, the resting-place of Charibert II, a son of Clotaire II who was briefly king of Aquitaine from 629 to his death in 632, and of his son. According to the 12th-century Chanson de Roland contained the body and relics of the Carolingian folk-hero Roland, who was a seigneur of Blaye in the eighth century, and of his companions Olivier and Turpin, deposited with grand solemnity in white marble sarcophagi. In Bordeaux across the Gironde the oliphaunt, Roland's split ivory horn, was preserved: li pelerin li veient ki la vunt, "the pilgrim may see it who goes"; a Seint Romain; la gisent li baron, "at Saint-Romain; there lie the barons", a sign interpreted by Gerald Brault to show that the pilgrimage sites at Bordeaux and Blaye had been established before the Chanson de Roland was composed. Indeed, in 1109 Hugh of Fleury concluded his account of the battle of Roncevaux with the words "whence Roland was carried to the citadel of Blaye and buried." The legend was long credited: in 1526 François I commanded the tomb of Roland to be opened. The nominal patron of the basilica, belonging to the Canons Regular of Saint Augustine, remained the local 4th-century martyr Saint Romanus of Blaye; here the pilgrims bound for Santiago de Compostela paused before taking to boats to cross to Bordeaux. In 848, the fort and its surrounding habitations were laid waste by the Viking chief Hasting. Some vestiges of the structure remain within the Vauban fortress at Blaye, which formed part of the traditional defenses of the Gironde estuary.

The Château des Rudel is a château in Blaye, Gironde, Nouvelle-Aquitaine, France. It was built to protect the fortified town of Blaye from possible enemy incursions and is built on a rocky spur overlooking the Gironde estuary. It was constructed in the 12th century, the chateau was then besieged by Protestants during the French Wars of Religion in the 16th century and it now lies in ruins.

The Battle of Blaye of 1593, also known as the Battle of Bec d'Ambès (in French) or Battle of the Gironde Estuary, was a naval Spanish victory that took place on 18 April 1593 off Blaye and Bec d'Ambès, Gironde Estuary, France, during the seven-month siege of Blaye between the French-Protestant forces of Henry of Navarre and the French-Catholic garrison of the city led by Governor Jean-Paul d'Esparbès de Lussan d'Aubeterre, in the context of the Brittany Campaign during the French Wars of Religion and the Anglo-Spanish War (1585–1604).

The Arrondissement of Blaye is an arrondissement of France in the Gironde department in the Nouvelle-Aquitaine region. It has 62 communes. Its population is 94,930 (2021), and its area is 782.4 km2 (302.1 sq mi).

Fort Paté is a round, tower-like Vauban fort on Paté Island in the Gironde estuary, Nouvelle-Aquitaine, France. It, with its twin Fort Médoc on the mainland and the citadel of Blaye, protected Bordeaux from attack by sea. With them, it was listed as a UNESCO World Heritage Site in 2008 as one of the fortifications of Vauban, bearing witness to the importance of Vauban's work in the history and of military architecture in the 17th and 18th centuries.

Saint-Martin-Lacaussade (French pronunciation: [sɛ̃ maʁtɛ̃ lakosad]) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.

Plassac (French pronunciation: [plasak]) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.

Saint-Genès-de-Blaye (French pronunciation: [sɛ̃ ʒənɛs də blaj], literally Saint-Genès of Blaye) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.

Cars (Occitan: Còps) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.

Fort Médoc is a fort built by Vauban, nearby Cussac-Fort-Médoc, in Gironde, Nouvelle-Aquitaine, France. The earthworks were started in 1689 and construction of the fort itself in 1691. The fort was an element of the "lock" intended to protect Bordeaux against the risk of invasion from the river, having been built on the left bank of the Gironde estuary, complementing Fort Paté, and the Blaye Citadel, which is located on the right hand bank of the Gironde. With the Citadel of Blaye, its city walls and Fort Paté, Fort Médoc was listed in 2008 as UNESCO World Heritage Sites, as part of the "Fortifications of Vauban" group.

Saint-Seurin-de-Cursac (French pronunciation: [sɛ̃ sœʁɛ̃ də kyʁsak]) is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.