Streets & squares
Jamsu Bridge
Bridge
Wikipedia names Jamsu Bridge 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 Jamsu Bridge. 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 Jamsu Bridge. Each source is linked.
Filming locations nearby
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Streets & squares
Banpo Bridge
South Korea · under 1 km
Girder bridge
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Landscapes & nature
Some Sevit
South Korea · under 1 km
Artificial islands in South Korea
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Landmarks & buildings
Seobinggo Station
South Korea · under 1 km
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Towns & cities
Banpo 2(i)-dong
South Korea · 1 km south
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Streets & squares
Dongjak Bridge
South Korea · 1 km west
Bridge
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Landmarks & buildings
Seoul Express Bus Terminal
South Korea · 1 km south-east