Construction of Kalta Minor Tower, which is located in front of the Muhammad Amin Khan Madrasa, started in 1851. According to the famous Khiva historian Munis, it was to become the highest tower in Central Asia.
Muhammad Amin Khan, who wanted Kalta Minor Tower to become the highest in the East, passed away in 1855 and its construction was halted. Had it been completed, the tower would have reached 70-80 meters in the height. Nowadays it is 26 meters in the height and 15 meters in the diameter.