This is the 3358th most frequent Polish word.
wieków
"Wieków" means "of ages" or "of centuries" in English.
In this sentence, 'wieków' refers to the span of centuries, indicating a long historical timeframe.
Od wieków ludzie budowali zamki na wzgórzach.
For centuries, people have been building castles on hills.
Here, 'wieków' metaphorically indicates a very long period of time, expressing emphasis and comparison.
Lato było piękne jak od wieków nie było.
The summer was beautiful as it hadn't been for ages.
In this context, 'wieków' refers to historical periods or ages, emphasizing their antiquity and memory.