Kukeldash Madrasah (1568-69), bordering the Lyabi-hauz, is among the biggest (80 x 60 meters) and most monumental in Central Asia, with over 130 hujras as well as a splendid example of "white interior". The entrance gate is the particular interest, inlay and fixtures are devoid of glue or nails and covered with heraldic ornaments. Kulbala Kukeldash is the name of Khan's foster-brother who was the builder of this structure.