This is the 12319th most frequent Turkish word.
hastaneleri
"Hastaneleri" means "the hospitals" in English.
Here, 'hastaneleri' again takes the role of a specific object being referred to, pointing to a particular group of hospitals that were newly constructed.
Yeni yapılan hastaneleri çok beğendim.
I really liked the newly built hospitals.
In this sentence, 'hastaneleri' denotes all of the hospitals collectively, emphasizing the scope of the action taken, again showing specificity in its accusative plural form.
Bütün hastaneleri iyileştirmek için çalıştılar.
They worked to improve all the hospitals.
The term 'hastaneleri' is the accusative plural form of 'hastane', meaning 'hospitals'. It is used here to indicate that the hospitals are specific, being the direct object of the verb 'visit'.