The Lyabi Hauz Ensemble (1568–1622) is the name of the area surrounding one of the few remaining hauz, or pond, in the city of Bukhara. Several such ponds existed in Bukhara prior to Soviet rule. The ponds acted as the city’s principal source of water, but were also notorious for spreading disease, and thus were mostly filled in during the 1920s and 1930s by the Soviets. The Lab-i Hauz survived owing to its role as the centerpiece of an architectural ensemble dating back to the 16th to 17th centuries. The Lyabi Hauz ensemble consists of the 16th-century Kukeldash Madrasah, the largest in the city, along the north side of the pond. On the eastern and western sides of the pond are a 17th-century lodging-house for itinerant Sufis, and a 17th-century madrasah.