Barry Lyndon filmed at Somerset Rural Life Museum, Glastonbury. The pistol duel was staged inside this tithe barn, which is now a rural life museum.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
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Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Glastonbury and it tells you what was shot around you, how to get there, and whether you can actually go in.
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