I’d say Sherwood Forest but the never actually film the Robin Hood films there Chatsworth is in a good percentage of period drama film/Tv though Bits of Castleton were instantly recognisable in Apple TV Invasion
What's the most famous film/TV location near to you? For me it's probably On Her Majesty's Secret Service. The scenes shot in Bern are quite close by, and the Piz Gloria/Lauterbrunnen scenes are a short-ish drive (& cable car) away.