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. It was restored in 1976.
To the right of the entrance, one finds the türbe (tomb) of the builder, with his cenotaph and three others belonging to relatives. This ‘room’ lies up against a northern wall of the mosque, but is open to the east, south and west; two heavy pillars, joined together by arches, carry the small dome. This kind of ‘open türbe’ can also be seen in the Muradiye cemetery in Bursa.

On the picture: The ‘open türbe’ (on the foreground) and the ‘şadırvan’ (on the background, left).

A ‘şadırvan’ is a type of fountain that is usually built in the yard or entrance in front of mosques or other buildings where ritual prayers can be held, with the main purpose of providing water for drinking or ritual ablutions to several people at the same time, but also as decorative visual or sound element.

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