This is the 9585th most frequent German word.
moskaus
"Moskaus" is the genitive case of "Moskau," meaning "of Moscow."
In this sentence, "Moskaus" is used in the genitive case to show possession ('Streets of Moscow').
Ich träume von den schönen Straßen Moskaus.
I dream of the beautiful streets of Moscow.
Here, "Moskaus" refers to Moscow in the genitive case to attribute 'history'.
Die Geschichte Moskaus ist sehr faszinierend.
The history of Moscow is very fascinating.
"Moskaus" again represents possession in the genitive case, describing the attractions belonging to Moscow.