Shutter Island filmed at Whittenton Mills, Taunton. This abandoned textile mill was dressed as part of a concentration camp set for a traumatic flashback. On screen it's Dachau.
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 Taunton and it tells you what was shot around you, how to get there, and whether you can actually go in.
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