When it was built in 1127, the 47 metre Kalyan Minaret was probably the
tallest building in Central Asia.
Kalyan means "great" in Tajik. It has 10 metre deep
foundations
which include stacked reeds as earthquake protection.
The light patches on the minaret mark the restoration of damage caused
by Russian army in 1920.
The Kalyan Mosque is big enough for 10,000 people.
Genghis Khan was so impressed with the 47 metre high minaret that he
ordered it spared
when he sacked Bukhara in 1220.
The Mir-i-Arab Medressa is opposite the Poi-Kalyan mosque.
Mir-i-Arab was a 16th century sheik from Yemen who had a strong
influence on the ruling Khan at the time.