The Selimiye Mosque is in the city of Edirne, Turkey. It was commissioned by Sultan Selim II and was built by architect Mimar Sinan between 1568 and 1574. The mosque is one of the highest achievements of Islamic architecture. This grand mosque stands at the center of a külliye (complex of a hospital, school, library and/or baths around a mosque) which comprises an Islamic academy, a Hadith school, a timekeeper's room and a row of shops. In this mosque, an octagonal supporting system was created through eight pillars incised in a square shell of walls. The four semi domes at the corners of the square behind the arches that spring from the pillars, are intermediary sections between the huge encompassing dome (31.25 m diameter with spherical profile) and the walls. __
