exterior, view north, with western wall of Abul Aziz Madrasa in foreground and entrance facade of Ulugh Beg Madrasa in distance, 1990One of three madrasas commissioned by Ulugh Beg, this one in Bukhara was constructed over the same years as that in Samarkand. The builder, Ismail b. Tahir b. Mahmud al-Isfahani utilized the traditional courtyard plan, but instead of the standard four iwans, he included only two, located on the entrance (longitudinal) axis. A double-height arcade of niches links the iwans, each niche leading to a rectangular, barrel vaulted student cell. The main exterior façade features a centered pishtaq flanked by a double-height arcade that terminates in corner towers. A square vestibule beyond the entrance iwan provides a...