This is the 10505th most frequent Korean word.
국립공원
"National park"
Here, '국립공원' refers to a specific place serving as the location for a hiking activity.
나는 국립공원에서 하이킹을 했어요.
I went hiking in the national park.
In this sentence, '국립공원' is the object of the verb '방문하다' (to visit), highlighting the park as a destination.
우리 가족은 국립공원을 방문하려고 계획 중이에요.
Our family is planning to visit the national park.
Here, '국립공원' is used to define the general concept or purpose of national parks.