On the picture: The southwestern side of the Yıldırım Beyazıt Medresesi. This domed room, situated at the south end of the inner court, was a ‘dershane’ (classroom); it is 8,65 x 8,86 m large (inside dimensions).
This school / college was built in 1399, and repeatedly restored, last in 1948. Nowadays in use as a community clinic.

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