Castles & palaces
Saint George Castle
Oldest part of the Palazzo ducale, Mantua, Italy
Wikipedia names Saint George Castle 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 Saint George Castle. Each title’s page links to the sentence that says so.
Filming locations nearby
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Castles & palaces
Palazzo Ducale Mantua
Italy · under 1 km
Palace and museum in Mantua
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Landmarks & buildings
Mantua Cathedral
Italy · under 1 km
Cathedral
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Landmarks & buildings
Rotonda di San Lorenzo
Italy · under 1 km
Church building in Mantua, Italy
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Towns & cities
Mantua
Italy · under 1 km
Italian comune and city
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Castles & palaces
Palazzo del Te
Italy · 2 km south-west
Palace in the suburbs of Mantua, Italy
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Landmarks & buildings
Villa Riesenfeld
Italy · 8 km south-east