This is the 11585th most frequent Polish word.
katowickich
"Katowickich" means "of Katowice" or "related to Katowice" (a city in Poland).
In this sentence, 'katowickich' is an adjective derived from 'Katowice', describing the districts associated with the city Katowice.
Zabytki katowickich dzielnic są warte odwiedzenia.
The monuments of the Katowice districts are worth visiting.
Here, 'katowickich' is an adjective describing athletes affiliated with Katowice, emphasizing their origin or representation.
Katowickich zawodników podziwia cała Polska.
Katowice athletes are admired by the whole of Poland.
In this instance, 'katowickich' modifies cultural events, referring to the events that take place in or are associated with Katowice.