France's Loire Valley: Castles fit for a king

It's a majestic stretch of river that's home to the biggest concentration of castles in the world. It's hard not to be amazed by the Renaissance treasures of France's Loire Valley. Between Tours and Blois, locals do all they can to keep this royal heritage alive for the millions of tourists who flock here every year. FRANCE 24 takes you on a tour of this spectacular region.