Indiana Jones And The Last Crusade filmed at Schloss Bürresheim, Mayen. A distant view of this hilltop medieval castle, heavily enhanced with painted matte backdrops, stands in for the Brunwald fortress. On screen it's Castle of Brunwald.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Mayen and it tells you what was shot around you, how to get there, and whether you can actually go in.
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