OTTOMAN ARCHITECTURE-Classical period(1437-1703)

he Classical period of Ottoman architecture is to a large degree a development of the prior approaches as they evolved over the 15th and early 16th centuries and the start of the Classical period is strongly associated with the works of Mimar Sinan.In this period, Ottoman architecture, especially with the works, and under the influence, of Sinan, saw a new unification and harmonization of the various architectural parts, elements and influences that Ottoman architecture had previously absorbed but which had not yet been harmonized into a collective whole.Taking heavily from the Byzantine tradition, and in particular the influence of the Hagia Sophia, Classical Ottoman architecture was, as before, ultimately a syncretic blend of numerous influences and adaptations for Ottoman needs.In what may be the most emblematic of the structures of this period, the classical mosques designed by Sinan and those after him used a dome-based structure, similar to that of Hagia Sophia, but among other things changed the proportions, opened the interior of the structure and freed it from the colonnades and other structural elements that broke up the inside of Hagia Sophia and other Byzantine churches, and added more light, with greater emphasis on the use of lighting and shadow with a huge volume of windows.These developments were themselves both a mixture of influence from Hagia Sophia and similar Byzantine structures, as well as the result of the developments of Ottoman architecture from 1400 on, which, in the words of Godfrey Goodwin, had already "achieved that poetic interplay of shaded and sunlit interiors which pleased Le Corbusier."
During the classical period mosque plans changed to include inner and outer courtyards. The inner courtyard and the mosque were inseparable. The master architect of the classical period, Mimar Sinan, was born in 1492 in Kayseri and died in Istanbul in the year 1588. Sinan started a new era in world architecture, creating 334 buildings in various cities. Mimar Sinan's first important work was the Şehzade Mosque completed in 1548. His second significant work was the Süleymaniye Mosque and the surrounding complex, built for Suleiman the Magnificent. The Selimiye Mosque in Edirne was built during the years 1568–74, when Sinan was in his prime as an architect. The Rüstempaşa, Mihriman Sultan, Ibrahimpasa Mosques and the Şehzade, Kanuni Sultan Süleyman, Roxelana and Selim II mausoleums are among Sinan's most renowned works. Most classical period design used the Byzantine architecture of the neighboring Balkans as its base, and from there, ethnic elements were added creating a different architectural style.
Examples of Ottoman architecture of the classical period, aside from Turkey, can also be seen in the Balkans, Hungary, Egypt, Tunisia and Algiers, where mosques, bridges, fountains and schools were built.