This is the 8388th most frequent Russian word.
музей
Museum.
Here, 'музей' is used in the accusative case to indicate the destination of movement.
Я ходил в музей искусства вчера.
I went to the art museum yesterday.
In this case, 'музей' is in the nominative case, serving as the subject of the sentence.
Этот музей известен своими уникальными экспонатами.
This museum is famous for its unique exhibits.
Here, 'музей' is in the genitive case as part of the prepositional phrase 'у музея', indicating location.