This is the 11937th most frequent Turkish word.
gidilecek
"To be gone to" or "that will be gone to."
Here, 'gidilecek' is used as an adjective derived from the verb 'gitmek' (to go), describing a destination to be visited in the future.
Yarın gidilecek yer hakkında karar vermeliyiz.
We need to decide on the place to be visited tomorrow.
In this sentence, 'gidilecek' modifies 'şehirleri' (the cities), indicating future visits to these locations.
Tatilde gidilecek şehirleri önceden planladık.
We planned the cities to be visited during the holiday in advance.
'Gidilecek' in this context specifies upcoming events as the ones intended for attendance.