The Mausoleum of Genghis Khan is located on the Gandeli Grassland in Yijinhuoluo Banner, Ordos City, Inner Mongolia, 70 kilometers away from Dongsheng District.
"Secret burials" are popular among the Mongols, so where the real Mausoleum of Genghis Khan is has always been a mystery. The current Mausoleum of Genghis Khan is a tomb. After many moves, it was not moved back to its hometown from Kumbum Monastery in Huangzhong County to Yijinhuoluo Banner in 1954, 185 kilometers north of Baotou City.
The Mausoleum of Genghis Khan has now become a major tourist attraction in Inner Mongolia.
As for you saying that you can go there by train from "Haoqu", I'm very sorry. I don't know which city "Haoqu" is, so I can't give you a correct answer on this point.