Biibulag (Baibalyk) – Ancient Uighur City in Bulgan Province, Mongolia
Biibulag, historically called Baibalyk, is an ancient Uighur city in Khutag-Öndör soum, Bulgan Province, Mongolia. The ruins lie about 14 kilometers west of the soum center. Today, locals still call it Biibulag. This historic site provides a unique glimpse into the cultural, religious, and commercial life of Central Asia during the 8th century.
Historical Significance of Baibalyk
Baibalyk appears in an inscription dedicated to Uighur ruler Moyun Chur, found in Saikhan soum, Bulgan Province. According to the inscription, Moyun Chur ordered the Sogdians and Tabgachs to build the city on the banks of the Selenge River. Therefore, Baibalyk was a royal foundation. Moreover, it became an important urban center during the Uighur Khaganate.
Cultural and Religious Center
At its peak, Baibalyk served as a major cultural and religious hub. For example, Chinese merchants lived in the city and boosted its trade. Additionally, Sogdian scholars introduced Buddhism and Manichaeism. They also translated sacred texts into the Uighur language. As a result, the city became a center of learning, religious activity, and cultural exchange.
Architecture and City Layout
Baibalyk featured two massive earthen walls, one to the north and one to the south. Builders constructed them by compacting layers of soil. Although most walls have eroded, a part of the northern wall still stands. It measures 4 meters high and 2 meters thick, and small openings likely served as lookout points.
Near the northern wall, visitors can see the remains of a large temple complex. In front of the temple stood a pair of stone guardian lions—one male and one female. These sculptures demonstrate the city’s skilled craftsmanship and symbolic art.
Decline and Destruction
Around 840 AD, Kyrgyz nomads migrating from the Yenisei region attacked and destroyed Baibalyk. Afterward, the city was abandoned and never restored. Consequently, this marked the end of its prominence.
Today’s Biibulag Ruins
Today, the ruins of Baibalyk (Biibulag) remain a testament to the cultural sophistication and historical importance of the Uighur Khaganate. Visitors can explore the remaining walls, temple foundations, and stone sculptures. In doing so, they gain insight into early Mongolian urban life, religious practices, and cultural exchange.
