Follow the gentle River Vilaine from Messac to Redon, stopping to visit the lovely St Saveur Abbey and its lively Monday market, before crossing the viaduct at Corbinières. Enjoy the greenery of the forest of Gâvre between Guenrouët and Blain, home to the famous Château. Pass through the Quiheix locks to access the River Erdre, where, according to legend, 100 castles once sat along its banks, and cruise on to the historical cathedral city of Nantes.