Where is The Castle of Cagliostro set?
1979 anime film directed by Hayao Miyazaki
The Castle of Cagliostro (1979) is not pinned on this map. Wikidata records no setting for this anime. What is below is the weaker claim its Japanese Wikipedia article makes: the real places its setting was modelled on. Where the anime takes place, not where it was made: an anime is drawn and filmed nowhere, so this is the only kind of location it has.
Part of the Lupin III franchise
Drawn from these real places
Japanese Wikipedia says this anime’s setting was modelled on these real places. Nothing was filmed at them.