Landscapes & nature
Motława
River in Poland
Wikipedia names Motława 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 Motława. Each title’s page links to the sentence that says so.
Filming locations nearby
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Landscapes & nature
Jezioro Godziszewskie
Poland · 11 km west
Lake in Poland
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Towns & cities
Rywałd, Pomeranian Voivodeship
Poland · 11 km south-west
Village in Pomeranian, Poland
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Landscapes & nature Jamertal
Poland · 12 km south-west
Lake in Pomeranian Voivodeship, Poland
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Towns & cities
Starogard Gdański
Poland · 16 km south-west
City in Pomeranian Voivodeship in northwestern Poland
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Castles & palaces
Malbork Castle
Poland · 21 km east
Castle built in Prussia (now Poland) by the Teutonic Knights
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Landmarks & buildings Prison in Malbork
Poland · 21 km east