Following in the footsteps of Turner, one of Britain's most loved artists, Rick discovers how much the Cornish landscape influenced his work. At Newlyn Fish Market, he counts in the daily catch with the head auctioneer, who tells him how the market has adapted to modern times, while at Caerhays Castle, home to the nation's largest collection of magnolia plants, Rick discovers how this corner of Cornwall was once home to some of the great Victorian plant hunters