Between Guingamp and Saint-Brieuc, the houses of Châtelaudren stand in tiers along the banks of the river Leff. This small town of character no longer has its citadel, but it has preserved some wonderful traces of its trading history and its role as a crossroads town. Inside the chapel of Notre Dame du Tertre, perched on the castle mound, you’ll find panelling painted in amazing colours. From the castle esplanade, which you reach by climbing a massive granite staircase, you can look down on the slate roofs. There are many 17th and 18th century houses, with remarkable skylights, carved in stone. Around the church of Saint-Magloire, the streets become narrower and the houses are closer together. Little squares are surrounded by houses with sharply angled or curved roofs.