Abdi Efendi Mosque

It was rebuilt by Bahri Pasha in 1886 and underwent large-scale repairs.
The building has been repaired at different periods throughout history; its upper-story plan feature was partially lost after these repairs.
In the determination of foundation works dated 1924, it was recorded as “Abdullah (Abdi) Efendi Mosque” within the borders of Selmanağa Neighborhood. At that time, it was open for worship and in a well-maintained condition.

It is a square-plan masjid with masonry (stone/brick) walls and a wooden roof.
It is also stated in some records that it is a rectangular-shaped building with a raised basement; the roof is a hipped roof covered with Marseille-type tiles.
There are no inscriptions or graves anywhere.
It is stated that a porch over the fountain next to it served as a minaret; today the mosque has a single-balcony, sheet-covered, masonry minaret.
In historical records, it has also been referred to as “Kumru Masjid”, “Abdullah Efendi Masjid”, “Hammal Başı Masjid”, “Abdi Efendi Masjid” and “Arslan Ağa Masjid”, and therefore its name has changed many times over time.
The Hadika writer puts forward a different view on the issue of benefactorship with the statement, “The benefactor is Kumru Mehmet Ağa. His grave is in the cemetery outside Üsküdar. This mosque has no neighborhood.”
The name of the mosque is also mentioned in a decree dated May 1780; this informationshows that the structure existed in the 18th century.
It is seen that the building left its mark on Ottoman architectural history with its fountains and different names connected to Mahpeyker Kösem Sultan’s chamberlain Arslan Ağa.