This is the 2755th most frequent Turkish word.
i̇skenderun
İskenderun: A city and major port located in southern Turkey, on the Mediterranean coast.
In this sentence, 'İskenderun' is used as a proper noun, specifying the name of a city.
İskenderun, Akdeniz kıyısında bir liman kentidir.
Iskenderun is a port city on the Mediterranean coast.
Here, 'İskenderun'daki' is an adjectival form derived from the proper noun, indicating location (in Iskenderun).
İskenderun'daki restoranların çoğu deniz manzarasına sahiptir.
Most of the restaurants in Iskenderun have a sea view.
In this instance, 'İskenderun'dan' is derived from the proper noun with a suffix meaning 'from', indicating origin or source.