Fairly modern and very frequent trains from Adana and Mersin. The trunk line bypasses the city about a few km to the east. Yenice is the nearest trunk line station and has daily connections to main centres of the country such as Istanbul and Ankara.
The city has lots to see from Roman and Biblical times, for instance, in a clockwise route starting from the west:
If you are wondering in the city, or if you somehow happen to be in the city, never ever forget to buy Cezerye: some kind of a Turkish delight that has a different texture and taste. You should for sure try shalgam too but you might not be able to see it due to it being a seasonal drink that is sour and bitter, refreshing though.