Mimar Sinan or Koca Mi'mâr Sinân Âğâ (Ottoman Turkish: ; Modern Turkish: Mimar Sinan) (15 April 1489 - 9 April 1588) was an Ottoman architect and civil engineer. He worked for sultans Suleiman the Magnificent, Selim II, and Murad III. He worked about fifty years for Ottoman Empire. His masterpiece is the Selimiye Mosque in Edirne. His most famous work is the Suleiman Mosque in Istanbul. 