Architecture of Mongolia
The Xiongnu confederation ruled present-day Mongolia from the third century BCE through the first century CE, living in portable, round tents on carts and round yurts. The Xiongnu aristocracy lived in small palaces, and their villages were protected by huge walls. S. I. Rudenko also mentions capital construction built of logs. Archaeological excavations indicate that the Xiongnu had towns; their chief city was Luut Hot (Dragon City).
Xiongnu
Yap, apparently describing the early period, places the Chanyu's main camp north of Shanxi with the Tuqi King of the Left holding the area north of Beijing and the Tuqi King of the Right holding the Ordos Loop area as far as Gansu. Grousset, probably describing the situation after the Xiongnu had been driven north, places the Chanyu on the upper Orkhon River near where Genghis Khan would later establish his capital of Karakorum. The Tuqi King of the Left lived in the east, probably on the high Kherlen River. The Tuqi King of the Right lived in the west, perhaps near present-day Uliastai in the Khangai Mountains.