The Aşağı Pirler Türbesi (= Lower Tomb of the Governors / left on the picture) and the Çilehane Camii (hidden behind the trees, with only its minaret’s peak visible). Both were built in the early 15th century.
These are two of the three historic buildings in the recently arranged ‘Pirler Parkı’ (Park of the Governors).
The third being the ‘Yukarı Pirler Türbesi’ (= Upper Tomb of the Governors).

Correspondent: J.M.Criel, Antwerpen.
Sources: ‘Vakıf Abideler ve eski Eserler’ - Vakıflar Genel Müdürlüğü, Ankara 1983
& Website of ‘Haberler.com’.