Throughout the late 15th and 16th centuries , Touraine was a favorite residence of French kings , and the dark and gloomy castles were converted to Renaissance châteaux ; for this reason the region was titled `` The Garden of France '' .
Throughout the late 15th and 16th centuries , Touraine was a favorite residence of French kings . The castles were converted to Renaissance ; for this reason the region was titled `` The Garden of France '' .