Landmarks & buildings
cave of the Sibyl
Archaeological site in Italy
Wikipedia names cave of the Sibyl as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in cave of the Sibyl. Each title’s page links to the sentence that says so.
The Count of Monte CristoAdventure series1998–TVmaze
Filming locations nearby
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Towns & cities Cumae
Italy · under 1 km
Ancient Roman city near Naples, Italy
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Towns & cities
Licola
Italy · 3 km north
Italian village
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Towns & cities
Baia
Italy · 4 km south
Human settlement in Bacoli, Metropolitan City of Naples, Campania, Italy
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Castles & palaces Castello Aragonese
Italy · 5 km south-east
Building in Bacoli, Italy
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Towns & cities Bacoli
Italy · 6 km south-east
Italian comune
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Landscapes & nature
Piscina Mirabilis
Italy · 6 km south
Reservoir