Arzon

Er Lannic is a small island in the commune of Arzon, in the Morbihan department in Brittany in northwestern France. Er Lannic is a bird reserve and also the site of two stone circles, the southern of which is submerged.

Gavrinis (Breton: Gavriniz) is a small island in the Gulf of Morbihan in Brittany, France. It contains the Gavrinis tomb, a megalithic monument notable for its abundance of megalithic art in the European Neolithic. Administratively, it is part of the commune of Larmor-Baden.

Larmor-Baden (Breton: An Arvor-Baden) is a commune in the Morbihan department of Brittany in northwestern France. The inhabitants of Larmor-Baden are called in French Larmoriens.

Operation Chastity was a World War II plan by the Allies to seize Quiberon Bay, France, enabling the construction of an artificial harbor to support Allied operations in Northern France in 1944. The artificial harbor was not developed, as the US VIII Corps failed to capture German-held areas that threatened the port. By the end of August 1944, Allied forces had captured all of Brittany except for the critical areas, preventing the further development of the operation. Following the capture of Antwerp and its port facilities in early September 1944, Operation Chastity was officially cancelled on 7 September. The non-completion and eventual cancellation of Operation Chastity exacerbated strains on the Allied logistical system, may have prevented an Allied victory over Germany in 1944, and has been described as "the critical error of World War II", although other historians believe that priority was rightly given to the pursuit of the routing German forces.

Locmariaquer (French pronunciation: [lɔkmaʁjakɛʁ]; Breton: Lokmaria-Kaer) is a commune in the Morbihan department in Brittany in north-western France. It lies 8.5 mi (13.7 km) south of Auray by road.

The Locmariaquer megaliths are a complex of Neolithic constructions in Locmariaquer, Brittany. They comprise the elaborate Er-Grah tumulus passage grave, a dolmen known as the Table des Marchand and "The Broken Menhir of Er Grah", the largest known single block of stone to have been transported and erected by Neolithic people.

Île-aux-Moines (French pronunciation: ​[il o mwan]; Enizenac'h in Breton; the name means island of the monks) is a commune in the Morbihan department in the region of Brittany in northwestern France. It is the largest island in the Gulf of Morbihan. It is one of two island communes of the Gulf, the other being Île-d'Arz.

Saint-Gildas-de-Rhuys (Breton: Lokentaz) is a commune in the Morbihan department of Brittany in north-western France. Inhabitants of Saint-Gildas-de-Rhuys are called in French Gildasiens. Its French name refers to Saint Gildas, who founded the abbey of Saint-Gildas-de-Rhuys on the Rhuys Peninsula in the 6th century. From 920 to 1008, the Norman raids forced the monks to bring the relics of the saint to the abbey of Saint-Gildas of Châteauroux that they founded under the protection of the prince Ebbes of Déols.

Baden (French pronunciation: ​[badɛn]; Breton: Baden) is a commune in the Morbihan département in Brittany in northwestern France.

Île-d'Arz (French pronunciation: ​[il daʁ]; Breton: An Arzh, pronounced [ãnars]) is an archipelago of nine islands and a commune in the Morbihan department, Brittany, northwestern France, only 6 kilometres (3.7 miles) to the southwest of Vannes. It is located in the Gulf of Morbihan. Île d'Arz and Île-aux-Moines are the only two islands of the gulf that are also communes.

Arradon (French pronunciation: ​[aʁadɔ̃]; Breton: Aradon) is a commune in the Morbihan department in the Brittany region in northwestern France.

The Gulf of Morbihan is a natural harbour on the coast of the department of Morbihan in southern Brittany, France. Its English name is taken from the French version, le golfe du Morbihan, though it would be more precisely called 'the Morbihan' as its Breton name 'Ar Mor Bihan' means 'the little sea'. (Compare the Welsh y môr bychan), as opposed to the Atlantic Ocean outside, (Ar Mor Bras). Legend says that there are as many islands in the Gulf as there are days of the year. In fact the gulf has about 40, depending on the tides. Many islands are private property, except the largest two, Île-aux-Moines and Île-d'Arz. The area around the gulf features an extraordinary range of megalithic monuments. There are passage dolmens, stepped pyramids with underground dolmen chambers, stone circles, and giant menhirs, among others. The site best known to outsiders is Carnac, where remains of a dozen rows of huge standing stones run for over ten kilometers. The passage grave of Gavrinis, on a small island in the Gulf, is one of the most important such sites in Europe. Some of the ruins have been dated to at least 3300 BC — 200 years older than England's Stonehenge.