Selimiye Mosque (Edirne)

 mosque, UNESCO World Heritage Site, 16th century construction

The Selimiye Mosque (Turkish: Selimiye Camii) is an Ottoman mosque in the city of Edirne, Turkey. The mosque was commissioned by Sultan Selim II and was built by architect Mimar Sinan between 1568 and 1574. It was considered by Sinan to be his masterpiece and 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 a medrese (Islamic academy teaches both Islamic and scientific lessons), a dar-ül hadis (Al-Hadith school), a timekeeper's room and an arasta (row of shops). In this mosque Sinan employed an octagonal supporting system that is 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.