This is the 6351st most frequent Polish word.
brzeszczach
"Brzeszczach" is the locative plural form of "brzeszczak," which refers to a type of saw blade or a cutting tool in Polish.
In this sentence, 'Brzeszczach' refers to the name of the town Brzeszcze, where the activities took place, in locative case indicating location.
Byliśmy w Brzeszczach na wakacjach.
We were in Brzeszcze on vacation.
The word 'Brzeszczach' is used in the locative case to specify the place where the discussion took place, means 'in Brzeszcze'.
Rozmawialiśmy o historii w Brzeszczach.
We talked about the history in Brzeszcze.
Here, 'Brzeszczach' is again in the locative case, indicating the location of the memories mentioned.