Plouha is a town and commune in the Côtes-d'Armor department of Brittany in northwestern France. Inhabitants of Plouha are called plou…Plouha is a town and commune in the Côtes-d'Armor department of Brittany in northwestern France. Inhabitants of Plouha are called plouhatins in French. Plouha has many notable medieval sites ranging from chapels and churches to manoires and kers, including The Chapel of Kermaria.