Where was The Olsen Gang Sees Red filmed?

1976 film by Erik Balling

The Olsen Gang Sees Red (1976) was filmed in Royal Danish Theatre, Vallø Castle and Hotel D'Angleterre, 3 places named in its Wikipedia article, in Denmark. 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.

Part of the Olsen Gang film series

See them on the map → Wikipedia Source data

Places per Wikipedia's article

The Wikipedia article names 3 places. Each links to the sentence that says so.