Uighar city ruin Baibalik is situated 14km west from the centre of Khutag-Undur Soum,  Bulgan Aimag and locals also call it Biibulag. 44th line of an inscription on the stele which is built in Saikhan Soum, Bulgan Aimag dedicating to Uighar king Myunchur says that “I ordered to establish Baibalik city on bank of Selenge River”. Therefore, researchers claim that this city was built by Myunchur, a king of Uighar. Since its establishment, the city had always been visited by Sogd (current Tadjigistans) and Chinese merchants, Sogd preachers.

They did a missionary work and translated Buddhist writings into Uighar language. Baibalik was a flourishing city and one of cultural centers in central Asia of the period. There were two fortresses built of clay in the city.  But most part of them collapsed and only east and north section of the northern fortress remained currently. This remained fortress is 4m high and 2m thick. Many tiny holes on the fortress are supposed to have been used for observing outside. On northern fortress of the city there was a large temple surrounded by lions of male and female. In 840 Baibalik city was destroyed by Kirgiz nomadic tribes from Yenisei River. All books and sutras were burned during this destruction.