The Man In The Iron Mask filmed at Château de Fontainebleau, Fontainebleau. The market square where hungry crowds rebel is the courtyard of this former royal palace, now a UNESCO site.
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 Fontainebleau and it tells you what was shot around you, how to get there, and whether you can actually go in.
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