Where was Von Ryan's Express filmed?

1965 World War II American film directed by Mark Robson

Von Ryan's Express (1965) was filmed in Rome, Los Angeles, Alps, Cortina d'Ampezzo, Anzio, Tivoli and 12 more places, 18 places named in its Wikipedia article, in the United States, Italy, Switzerland, Spain. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

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