Called Ulucami or great mosque in Ottoman architecture, this type of building
is considered by some scholars to be incompatible with Sinan's endeavours to
develop the central domed structure. Others consider this mosque to be a side
experiment for Sinan who may have been seeking a change, having sufficiently exploited the centralised plan.
Two rows of triple windowless domes set parallel to the mihrab wall are
supported by two central columns. On the mihrab side, buttresses markedly
protruding from the outer wall help support the weight of the domes which the
wall alone is too slight to carry. Galleries on both flanks of the building
support the lateral load. Here, arches link the middle piers to the external
wall in a manner typical of Sinan. The vaults covering the side galleries give
the facade a double-arched appearance, creating another unusual visual
effect, but the complex two storeyed portico structure surrounding the mosque on
three sides seems to be in line with practices frequently found in Sinan's
mosques. In an unprecedented manner, the minaret is situated on top of the wide
wall in the centre of the entrance front. The mihrab side too is decorated in an
unusual manner, with four rows of windows of different proportions and shapes,
set between buttresses and arches. The interior gives a sense of unified space,
the group of six domes being supported by only two slim columns.
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.