Landscapes & nature
Ulleungdo
Island
Wikipedia names Ulleungdo 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 Ulleungdo. Each title’s page links to the sentence that says so.
Other filming locations in South Korea
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Towns & cities
Seoul
South Korea
Capital and largest city of South Korea
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Towns & cities
Incheon
South Korea
City in Seoul Capital Area, South Korea
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Towns & cities
Daejeon
South Korea
Metropolitan city in South Korea
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Landmarks & buildings
Incheon International Airport
South Korea
International airport, near Seoul in South Korea
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Landscapes & nature
Seongap-do
South Korea
Island in South Korea
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Landscapes & nature
Seungbongdo
South Korea
Island in South Korea