The Juma Mosque is unlike any other in Central Asia. There is no dome, no arched courtyard, no central iwan — just a flat-roofed hall the size of a city block, supported by 213 wooden columns spaced in a grid, each one different. The oldest are believed to date to the 10th century; others are 12th, 13th, 18th. Some are intricately carved with floral and geometric reliefs; others are plain timber. Light filters in through two small skylights in the ceiling, falling on small constellations of columns at a time.
The mosque's 33-metre minaret rises beside the hall and can be climbed for one of the best views of the old city. The interior is best visited early or late — midday brings most of the tour groups.