Streets & squares
Old Warden Tunnel
Railway tunnel in the UK
Wikipedia names Old Warden Tunnel as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Old Warden Tunnel. Each title’s page links to the sentence that says so.
Those Magnificent Men in their Flying MachinesAdventure film1965
Filming locations nearby
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Towns & cities
Old Warden
England · 3 km south-east
Village and civil parish in Bedfordshire, UK
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Landmarks & buildings
RAF Cardington
England · 4 km north-west
Former Royal Air Force station in Bedfordshire, England
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Towns & cities
Cardington
England · 4 km north-west
Village and civil parish in the Borough of Bedford in Bedfordshire, England, UK
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Streets & squares
Bedford–Hitchin line
United Kingdom · 5 km south-east
Railway line in the UK
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Towns & cities
Bedford
England · 8 km north-west
County town of Bedfordshire, England
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Towns & cities
Henlow
England · 9 km south-east
Village and civil parish in Bedfordshire, UK