Kyzyl-kala (I-XIII century)

The fortress stands on a plain 27 km north of the city called Biruni. Construction is oriented to the cardinal points and is almost square, measuring 65x63 meters. Most likely, the fortress was erected as a fortification and was part of a chain of border fortresses established for the protection of the north-eastern borders of ancient Khorezm. An outer wall of the fortress, cut by two circles swept loopholes for the convenience of archers, tells about the military mission of building.
Also, the Kyzyl-Kala fortress served as the center of agricultural surroundings and the crossroads of caravan routes passing through the ridge of Sultanuizdag.