A ruined octagonal brick pagoda (sometimes referred to as a stupa or a watchtower) dating to the 11th century is located near the city walls.

[3] Although the remaining pagoda is missing its top section, at 16.5 metres (54 ft) in height it is the tallest surviving pre-modern structure in Mongolia.

[3] In June 2014 a team of Mongolian and Japanese scientists surveyed the ruins of the pagoda, and made measurements and 3D scans of it.

They found traces of coloured plaster on the surface of the internal wall, which they considered to be remains of a mural painting.

[4] The pagoda was extensively restored and reconstructed between 2014 and 2016 and now belongs to several attractions related to the Khitan in eastern Mongolia.