Fatma Sultan Mosque

Fatma Sultan Mosque was rebuilt in 1727–1728 on the site where the ruined Terzibaşı Pîrî Ağa Masjid had stood.
Since the Hocapaşa fire of 29 September 1755 affected Bâbıâli and its surroundings, it is considered that the mosque may also have been damaged by this disaster.
The mosque was extensively repaired in 1827–1828 during the reign of Sultan Mahmud II, and it is recorded that this repair constituted a defining renewal of the structure.
The structure acquired a function as a Sufi Lodge center within the Naqshbandi-Khalidi circle when the sheikhdom of Ahmed Ziyâeddin Gümüşhanevî was moved here in 1859.
The architectural program of the Sufi Lodge complex was expanded in 1875 with the addition of harem and selamlık sections to the west.
With the closure of the Sufi Lodges in 1925, Sufi Lodge activity came to an end; the mosque and Sufi Lodge sections were for a time subjected to public uses (barracks/depot, etc.).

By being located directly opposite the Bâbıâli/Province line in Cağaloğlu, the structure is one of the rare religious buildings directly associated with the administrative center of Istanbul.
The mosque-Sufi Lodge arrangement architecturally displayed a composition with two courtyards and two entrances: the mosque-tevhidhane was designed to open onto one courtyard, while the units belonging to the Sufi Lodge were planned to open onto a separate courtyard.
In the eastern part of the architectural program were the mosque and tevhidhane, while in the western part were Sufi Lodge-specific units such as the harem, selamlık, and meşrûtahane; this whole is one of the strong examples in which the Sufi Lodge-mosque relationship can be read in space.
The covering of the structure is described as a wooden roof with tile covering; the minaret, on the other hand, was handled in a style associated with the 19th-century repairs.
The information that a couplet from Nedîm’s chronogram poem is located as an inscription above the entrance gate is a distinctive element that adds a literary layer to the architectural identity of the structure.
Its becoming one of the most influential order centers of Istanbul in the second half of the 19th century as the Gümüşhânevî Sufi Lodge gave the mosque an identity that made it not only a place of worship, but also a center of Sufi education and ritual.