This is the 1631st most frequent Russian word.
австрии
"Австрии" is the dative or prepositional case of "Австрия," meaning "Austria" in English.
Here, "Австрии" is in the prepositional case, indicating the location where the action of traveling occurs.
Я мечтаю путешествовать по Австрии.
I dream of traveling across Austria.
In this sentence, "Австрии" also takes the prepositional case, expressing the static location of Vienna.
Виенна находится в Австрии.
Vienna is located in Austria.
Here, "Австрии" is in the genitive case, used to signify origin or belonging, meaning 'from Austria' in this context.