Towns & cities
Gwangmyeong
City in Gyeonggi Province, South Korea
Wikipedia names Gwangmyeong as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet. Newspapers, film offices and archives name more, listed below.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Gwangmyeong. Each title’s page links to the sentence that says so.
From published sources
Newspapers, film offices, archives and city filming permits say these were filmed at Gwangmyeong. Each source is linked.
Filming locations nearby
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Landmarks & buildings Gwangmyeong Police Station
South Korea · under 1 km
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Towns & cities
Gasan-dong
South Korea · 2 km east
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Towns & cities
Garibong-dong
South Korea · 2 km east
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Landmarks & buildings
Guil Station
South Korea · 2 km north
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Towns & cities
Gocheok-dong
South Korea · 3 km north
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Landmarks & buildings
Daerim Station
South Korea · 3 km north-east