Kalyan Mosque, Bukhara, Uzbekistan
Kalyan Mosque is traditionally rectangular and has four aivans. Entrance aivan has an external portal facing Poi-Kalyan Square and internal portal turned tu the yard. Arched galleries with 288 domes based on 208 columns surround the yard. An octahedral stand used as lectern is situated on the central axis at the internal portal. Mosaics and glazed bricks make colored decoration of facades.