The Castle of Rohan Dukes in Pontivy is a monumental fortress constructed between 1479 and 1485 by Jean II de Rohan as one of Brittany's last great fortified residences. Featuring thick curtain walls up to five metres wide and four circular corner towers, it represents innovative medieval military architecture designed to withstand early artillery. The castle exemplifies the transition from military stronghold to aristocratic residence. Classified as a historical monument in 1925 and currently undergoing restoration, it remains in Rohan family ownership and offers guided tours to visitors exploring Brittany's rich heritage.
