Koca Mi'mâr Sinân Âğâ (Ottoman Turkish: معمار سينان‎; Modern Turkish: Mimar Sinan, pronounced [miːˈmaːɾ siˈnan], "Sinan the Architect") (c. 1489/1490 – July 17, 1588) was the chief Ottoman architect (Turkish: mimar) and civil engineer for sultans Suleiman the Magnificent, Selim II, and Murad III. He was responsible for the construction of more than 300 major structures and other more modest projects, such as his Islamic primary schools (sibyan mektebs).