The Khodja Zain ad-Din complex, one of the pearls of Bukhara, is concealed amidst of residential district. It was built in the first half of the 16th century on the brink of the oldest remaining ponds. The pond had the marble walls. A carved marble spillway in the form of open jaws of a dragon (adjarkho), ornamentally enchased with an epigraph, was arranged south-easterly beside the staircase.