This is the 6121st most frequent Russian word.
столичные
"Столичные" means "metropolitan" or "capital-related."
In this sentence, 'столичные' is an adjective describing the residents of the capital city.
Столичные жители часто жалуются на сложность жизни.
Capital residents often complain about the complexity of life.
Here, 'столичная' modifies 'газета' (newspaper), indicating it is from the capital.
Моя любимая столичная газета прославилась объективной журналистикой.
My favorite capital newspaper is famous for its objective journalism.
'Столичные' here describes 'пейзажи' (landscapes) as being related to the capital city.