Southeast of Dar el Bey in Tunis is the Sidi Youssef Mosque (1616), with a slender octagonal (Hanafite) minaret faced with green tiles. Many of the 48 columns in the prayer hall have antique capitals. Over the mihrab is an octagonal dome. Associated with the mosque are the pyramid-roofed mausoleum of its founder, the Hafsid Bey Sidi Youssef, and a medersa (Koranic school) built in 1622. At the end of Rue Sidi B. Ziad stands the Aziza Othman Hospital, the city’s largest women’s hospital, named after the daughter of Bey Othman, who is still revered.