Chateau des ducs de Bretagne

"Numerous monarchs later stayed in the castle, where in 1598 Henri IV signed the famous Edict of Nantes advocating religious tolerance." Full review

"This enormous complex, seat of the Dukes of Brittany, was constructed in the 9th or 10th century, enlarged in the 13th century, destroyed, then rebuilt into its present shape by François II in 1466." Full review