Where was Castle Keep filmed?
1969 American war film directed by Sydney Pollack
Castle Keep (1969) was filmed in Novi Sad, Petrovaradin, Sremska Kamenica and Kamenički park, 4 places named in its Wikipedia article, in Serbia. 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.
Places per Wikipedia's article
The Wikipedia article names 4 places. Each links to the sentence that says so.
-
Towns & cities
Novi Sad
Serbia
City in Serbia, capital of Vojvodina
“The film's castle scenes were shot in Kamenica Park of Sremska Kamenica, while the street scenes were shot in Podgrađe of Petrovaradin, all in the city of Novi Sad, Yugoslavia (modern day Serbia).” Wikipedia
-
Towns & cities
Sremska Kamenica
Serbia
Human settlement
-
Towns & cities
Petrovaradin
Serbia
Settlement in the City of Novi Sad, Serbia
-
Landscapes & nature
Kamenički park
Serbia
Park in Novi Sad, Serbia
Recorded only at country level
Its Wikipedia article also says it was filmed in Yugoslavia, without naming a place, so it is not on the map.