On the picture: The mihrab’ (prayer niche), which indicates the direction of Mecca).
An example of the 19th century late-Ottoman ‘Turkish Baroque’ style, which was influenced by European Neo-Classicism (and more specifically here by the French ‘Nouvel Empire’ style).

Note: The term ‘Turkish Baroque’ is a general one; if necessary, more specific terms can be used: ‘Barok’ (= Neo-Baroque), ‘Rokoko’ (= Neo-Rococo) or ‘Ampir’ (= ‘Nouvel Empire’).

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