Industrialization started in the 1930s in Mongolia (then the Mongolian People's Republic), with large-scale building construction starting in the 1960s-1970s, where the core of Ulaanbaatar was built.
By the end of the communist era, Mongolia's tallest building was a 16-floor apartment building in Darkhan, constructed in 1985.
[1][2] Since 1990, there was an increase in 9-12 floor buildings, while 16+ floor buildings started appearing since 2010.
Mongolia's building code legislations define high-rise buildings as those 16+ floors in height.
[3] Mongolia's tallest pre-modern structure is Kherlen Bars Khot in Dornod Province.