This is the 9332nd most frequent Turkish word.
yeşilhisar
Yeşilhisar is a district in Kayseri Province, Turkey.
In this sentence, 'Yeşilhisar' is used as a proper noun referring to a specific district in Turkey.
Yeşilhisar güzel bir ilçedir.
Yeşilhisar is a beautiful district.
Here, 'Yeşilhisar' is again a proper noun, specifically indicating the location where the speaker was born.
Ben Yeşilhisar'da doğdum.
I was born in Yeşilhisar.
In context, 'Yeşilhisar' is used as a destination that the speaker desires to visit.