Problem: The Pont d'Arc is a massive natural stone arch spanning which river that gives its name to a French department?
Answer: ardeche

Problem: Which castle overlooks Pendle Hill?
Answer: clitheroe castle

Problem: Roy Plomley was, in 1944, the creator and first presenter of which radio programme?
Answer: desert island discs

Problem: Who sponsored the Great Exhibition of 1851
Answer:
prince albert