Ulugbek Medressa on the west side is the original medressa, finished in 1420 under Ulugbek (who is said to have taught mathematics there; other subjects included theology, astronomy and philosophy). Beneath the little corner domes were lecture halls, and at the rear a large mosque. About 100 students lived in the two storeys of dormitory cells here.
Many of the medressas' former dormitory rooms are now art and souvenir shops. In the high season a variety of traditional shows are put on for tourists in the Sher Dor courtyard, including mock Uzbek weddings and kurash, a form of Uzbek wrestling. There are also tacky evening sound-and-light shows put on for tour groups in the square, which can usually be watched for free from afar. For optimal views, police guards eagerly offer to escort visitors to the top of a minaret for 3000S. Don't pay more than 2000S.