This is the 165th most frequent Danish word.
byen
"The city" or "the town."
In this sentence, 'byen' refers to the same definite form and is used to describe a location within a specific city.
Vi gik rundt i byen om aftenen.
We walked around the city in the evening.
Here again, 'byen' is the city's definite article, emphasizing 'the city' as a specific entity that became quiet.
Byen var stille efter midnat.
The city was quiet after midnight.
Here, 'byen' is the definite form of 'by', meaning 'the city'. It's used to specifically refer to a particular city the speaker loves.