The name was adopted in 1924; before that, the city was known by a number of more prosaic names, including Их Хүрээ(Ix Xüree, “Great Camp”), Даа Хүрээ(Daa Xüree, “Great Camp”) (whence, via Chinese, its English names Kulun and Kuren), and Өргөө(Örgöö, “Residence”) (whence Urga).
2017 January 25, Anne Bailey, “Mapping air pollution to conquer it in Mongolia's capital”, in Deutsche Welle, archived from the original on 25 January 2017, Environment:
Mongolia's capital city of Ulaanbaatar has its share of tourist attractions - Genghis Khan Square, the National Museum, the State Opera and Ballet Theatre. But Ger Community Mapping Center guide Tuguldur Chuluunbaatar wants to highlight a different part of the city; a part that's often ignored.
2023 May 21, Michel Rose, “Mongolia to supply critical metals to France, Macron says”, in Reuters, archived from the original on 2023-05-22, Commodities:
Mongolia will supply critical metals to France needed for its energy transition, President Emmanuel Macron said on Sunday during the first ever visit to Ulaanbaatar by a serving French president.
2023 September 4, “Pope visits charity center in Mongolia, says Church not driven by proselytization”, in EFE, archived from the original on September 07, 2023:
In one of the rooms of the center, which will also serve as a temporary shelter for immigrants who arrive in the city without any point of reference, Francis recalled that when the first missionaries arrived in Ulaanbaatar in the 1990s, they immediately felt a call to charity.