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The Château de Dinan consists of a keep, in the town of Dinan, in the Côtes-d'Armor département of the Brittany region of France.The keep and the gate are part of the 2,600 metres (8,500 ft) of medieval ramparts which still surround the old town.It is called Donjon de la duchesse Anne (Keep of the Duchess Anne), and stands 111 feet (34m) high near the Saint Louis gate.

Léhon (Breton: Lehon, Gallo: Léon) was a former commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2018, it was merged into the commune of Dinan.

The arrondissement of Dinan is an arrondissement of France in the Côtes-d'Armor department in the Brittany region. It has 67 communes. Its population is 102,698 (2016), and its area is 984.9 km2 (380.3 sq mi).

The canton of Dinan is an administrative division of the Côtes-d'Armor department, northwestern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Dinan.It consists of the following communes:AucaleucDinanQuévertTrélivanVildé-Guingalan