The Kalyan minaret is a minaret of the Po-i-Kalyan mosque complex in Bukhara, Uzbekistan and one of the most prominent landmarks in the city.
The minaret, designed by Bako, was built by the Qarakhanid ruler Mohammad Arslan Khan in 1127 to summon Muslims to prayer five times a day. An earlier tower collapsed before completion.
It is made in the form of a circular-pillar baked brick tower, narrowing upwards. It is 45.6 metres high, of 9 metres diameter at the bottom and 6 metres overhead.
Address Bukhara, Uzbekistan
Coordinates 39°46'32.475" N 64°24'54.179" E