This is the 10670th most frequent Korean word.
군산에서는
"In Gunsan" (referring to the city Gunsan with the topic marker).
Here, '군산에서는' is used to provide the location-specific context for the statement, introducing Gunsan as the subject area of discussion.
군산에서는 그 도시의 역사적인 건축물들이 유명합니다.
In Gunsan, the city's historical buildings are famous.
In this sentence, '군산에서는' establishes Gunsan as the place where the described activity takes place, emphasizing the city's involvement.
군산에서는 매년 큰 축제가 열립니다.
In Gunsan, a large festival is held annually.
'군산에서는' sets the scene for discussing Gunsan's characteristic offering, framing the availability of seafood within the city.