The Yörgüç Paşa Camii was built in 1428, on initiative of Yörgüç Paşa, a Beylerbeyi (= ‘Commander of commanders’, this means: regional governor) and vizier of sultan Murat II.
The building is early-Ottoman, with a ‘reversed T’ ground plan. The prayer hall consists of two square and domed rooms, connected by a high arch. The north room is flanked by two other rooms, also square and domed (one on each side), that can be entered through a medium-sized doorway.
All arches are built with alternating white and red marble, which have a powerful decorative effect. The complex was restored in 1976, including the wall paintings executed in a Classical Ottoman style; this kind of paintwork is called ‘kalem işi’ (= work of the pen/paintbrush).

On the picture: The prayer hall. In the left corner: the doorway leading to the adjacent room.

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