Julia Bradbury walks along a six-mile stretch of the Llangollen Canal in Wales, where Thomas Telford built a mighty aqueduct that is now a world heritage site. Show more
Discover 11,128,835 listings and 279,913 playable programmes from the BBC
Julia Bradbury walks along a six-mile stretch of the Llangollen Canal in Wales, where Thomas Telford built a mighty aqueduct that is now a world heritage site. Show more