Mongolor Building

It has been called by various names in Mongolian such as the Angli Bank Building (Англи Банкны Барилга), Red Building of Grot (Гротын улаан), Headquarters of Baron Ungern (Барон Унгерны штаб), Prison of the Baron (Бароны шорон), School of the Red Pants (Улаан Өмдөтний Сургууль) and Military Hospital (Цэргийн госпиталь).

Mongolor LLC was the new name given in 1900 to an expanded version of the "Joint Stock Company for the Mining Entreprise in the Tushetu and Setsen Khan Aimags of Mongolia" which was itself founded in 1899 based on a 25-year gold mining concession granted to Victor von Grot, an official of the Russian Embassy in Peking.

The Mongolor company had investment from Russia, the Netherlands, Belgium (King Leopold II) and France.

The Mongolor Building was where the Chinese soldiers of Xu Shuzheng made a last stand against the Cossack army of Roman von Ungern Sternberg in early 1921.

After the People's Revolution in mid-1921 the School of the Red Pants was established with nine chosen students permanently stationed in the building.

In 1935 the contents of the 1921 military hospital on American Hill was carted east to its new location in the Mongolor Building.

Many historical buildings in Ulaanbaatar were demolished with little notice in 2019 including the old residence of Prime Minister Genden as well as the Natural History Museum.