Wales’s favourite weatherman, Derek Brockway, visits Usk, winner of the Wales in Bloom gold award an amazing 30 times. His walk is a stunning ten-mile circuit which starts and ends at Usk castle. Derek sees the landscape from above as he hitches a ride in a glider, learns about an ancient orchard, visits some community allotments and helps local youngsters plant sunflowers. Archaeologist Dr Erin Lloyd Jones finds out what the Romans did for Wales and Matthew Bassett explores decorative oriental-inspired tinware once made in the town.