The famous Hagia Sofia mosque in Istanbul Turkey. It was built by Constantine the Great in the 6th century, the architects were Isidore of Miletus and Anthemius of Tralles.
Hagia Sophia is one of the greatest surviving examples of Byzantine architecture. Its central dome is 31 meters in diameter and 56 meters high. It has been damaged by earthquakes in 558, 563, 989 and 1346. ...
The Commodore of the Ottoman Navy, Kilic Ali Pasha commissioned Mimar Sinan to construct him a mosque in 1580. Appointed to head the Ottoman Navy after his victory at Inebahti, Kilic Ali Pasha was an Ottoman admiral who originated from Italy. He converted to Islam to serve under Sultan Suleyman the Magnificent (1520-1566) after he had been caputered by pirats during his youth. After his retirem...
This church was constructed shortly before the Hagia Sophia to test wether a cupola like the one intended at the Great Church was even possible. Some time after 1453 it was turned into a mosque.