On the picture: The Yıldırım Beyazıt Türbesi (mausoleum) looks like a small mosque, because of the porch (12,80 m wide) adorning its north facade. In fact, it was the first Ottoman ‘türbe’ of this type.
The building in the background is the Yıldırım Medresesi (school / college).

Correspondent: J.M.Criel, Antwerpen.
Source: ‘Vakıf Abideler ve eski Eserler (volume III)’ - Vakıflar Genel Müdürlüğü, Ankara 1983 .