Scholars do not generally consider this mosque to be one of Sinan's works,
many of them attributing it to Davut Aga. However, if the mosque is studied
carefully, it becomes obvious that it constitutes an important step in the
development of Sinan's octagonal plan. Even if he was too old to conceive new
designs, the great master must have continued to have his previously conceived
schemes implemented. Here the central dome is no longer fitted into a simple
square structure, and the mosque, as in the case of Kadirga Sokollu and Molla
becomes a truly unified space covered with a single main dome and its integrated
semi domes. This basic unity of design is broken however by two cloister vaults
covering the entrance and its neighbouring areas.
The mosque gradually narrows in zigzags along the north-south axis with the
effect of enhancing the kiblah (direction of Mecca). The eyvan shaped plan
created on the ground floor with the addition of two side rooms is masterfully
integrated with the latecomers' area. Moreover, the opposition thus created
between the mihrab and the latecomers areas does not hinder the spatial harmony
of the interior. The dome, which is not very large, is easily supported by the
zigzagging walls which function as buttresses. As for the south or kiblah
facade, which had remained as massive as a buttress wall in many mosques
until then, Sinan finally manages to give it the liveliness and portent it
deserves. All these features indicate how important a stage this mosque
represents in Sinan's development.
Above text and pictures are from the book titled "Turkish Art and Architecture in Anatolia and Mimar Sinan".
You can purchase "Turkish Art and Architecture in Anatolia and Mimar Sinan" book and other Turkey related books from Explore Turkey Bookstore.