رستم باشا
Mihrimah Sultan, the only daughter of Suleiman and Hurrem and wife of the Grand Vizier Rüstem Pasha gave Sinan the commission to build a mosque with "medrese" (college), an "imaret" (soup kitchen) and a (Qur'an school) in Üsküdar. The "imaret" no longer exists. This Iskele Mosque (or Jetty mosque) already shows several hallmarks of Sinan's mature style: a spacious, high-vaulted basement, slender minarets, single-domed baldacchino, flanked by three semi-domes ending in three exedrae and a broad double portico. The construction was finished in 1548. The construction of a double portico was not a first in Ottoman architecture, but it set a trend for country mosques and mosques of viziers in particular. Rüstem Pasha and Mihrimah required them later in their three mosques in Constantinople and in the Rüstem Pasha Mosque in Tekirdağ. The inner portico traditionally have stalactite capitals while the outer portico has capitals with chevron patterns ("baklava").