This is the 6822nd most frequent Polish word.
finlandią
"Finlandią" is the instrumental form of "Finlandia," meaning "Finland" in Polish.
In this sentence, 'Finlandią' is used as the accusative case of the proper noun 'Finlandia', referring to the country, typically used with verbs of action like 'visit'.
Zawsze chciałem odwiedzić Finlandię.
I have always wanted to visit Finland.
Here, 'Finlandią' is in the instrumental case, indicating the means or medium by which the journey was conducted, often following prepositions like 'through'.
Podróż przez Finlandię była niezapomniana.
The journey through Finland was unforgettable.
In this instance, 'Finlandią' is also in the instrumental case, following the verb 'to be interested in', showing the entity of interest.