One 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 access to the courtyard and to flanking large domed chambers; one is a winter mosque, the other a classroom. The decorative scheme ma...