Founded in 1639 as a yurt monastery, Ulaanbaatar, then Örgöö (palace-yurt), was first located at Lake Shireet Tsagaan nuur (75 km directly east of the imperial capital Karakorum) in what is now Burd sum, Övörkhangai, around 230 kilometers south-west from the present site of Ulaanbaatar, and was intended by the Mongol nobles to be the seat of the first Jebtsundamba Khutughtu, Zanabazar, son of Tusheet Khan Gombodorj (1597-1655).