ウルグ・ベク
The Ulugh Beg Madrasah, built by Ulugh Beg during the Timurid Empire era of Timur—Tamerlane, has an imposing iwan with a lancet-arch pishtaq or portal facing the square. The corners are flanked by high minarets. The mosaic panel over the iwan's entrance arch is decorated by geometrical stylized ornaments. The square courtyard includes a mosque and lecture rooms, and is fringed by the dormitory cells in which students lived. There are deep galleries along the axes. Originally the Ulugh Beg Madrasah was a two-storied building with four domed "darskhona"s (lecture rooms) at the corners.