Literally ‘Almsgivers Wall’, but also known as ‘Chinggis Khaan’s Castle’, this 3.2km-long stone wall, believed to date from the 8th century, stretches around a rocky slope in Batshireet sum. It was once thought to be a defensive work or a game preserve, but recent archaeological digs by a Mongolian-American research team have identified at least 60 ancient graves within the walls, indicating that it may have been a royal cemetery. Chinggis would be hard pressed to live in his 'castle' as all that's left is the crumbling fortification several feet high. The site is 8km west of the road to Batshireet.