Угэдэй
After the fall of the Yuan in 1368, these permanent structures were replaced by portable mausoleums called the "eight white yurts" ("naiman tsagaan ger"). These had originally been palaces where the khan had lived, but were altered to mausoleums by Ögedei Khan. These yurts were first encamped at Avraga site at the base of the Khentii Mountains in Delgerkhaan in Mongolia's Khentii Province.