This is the 1262nd most frequent Japanese word.
国立
"National."
In this sentence, '国立' modifies '大学' (university), indicating that the entity is established and operated by the nation, emphasizing its national status.
国立大学に入学しました。
I enrolled in a national university.
Here, '国立' describes '博物館' (museum), identifying it as a facility funded and maintained by the government.
この街には国立博物館があります。
There is a national museum in this city.
'国立' in this context precedes '公園' (park), defining these parks as officially designated and protected by national government authorities.